TessCon Brings RESITRIX Roofing to Commercial Projects and Premium Homes

TessCon is now fully trained to install RESITRIX roofing for commercial projects in Birmingham and premium homes across the Midlands. Discover the system’s benefits, key design considerations and our 20-year manufacturer-backed warranty.
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RESITRIX roofing is now available from TessCon’s fully trained installers, giving commercial property owners in Birmingham and homeowners across the Midlands a specialist option for their next flat-roof project.

Our RESITRIX installations come with a 20-year manufacturer-backed warranty, available through trained installers and subject to the warranty terms.

For a facilities manager protecting occupied premises, that combines a proven waterproofing system with a team trained to install it. For a homeowner investing in a high-quality extension or renovation, it brings the same attention to the roof above a valuable living space.

The useful question is how RESITRIX fits your building. Here is what the system offers, where it makes sense and what a well-planned installation needs to consider.

What is RESITRIX roofing?

RESITRIX is a reinforced, single-layer waterproofing membrane combining EPDM synthetic rubber with a polymer-modified bitumen backing. Its overlapping seams are welded with hot air to form a watertight connection.

The EPDM surface provides resistance to UV exposure and weathering. The system also allows installers to form the connections around rooflights, outlets, corners and other details that a working roof needs. You can explore the membrane range in CARLISLE’s official RESITRIX product information.

There are several versions of the membrane, with different attachment methods and applications. Selecting the appropriate version is part of specifying the roof, alongside the condition of the structure and the layers beneath the waterproofing.

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What TessCon’s RESITRIX installer training means for you

TessCon has completed RESITRIX installer training. This matters because a roof’s performance depends on the preparation and detailing as well as the membrane itself.

The manufacturer’s RESITRIX training programme covers practical work such as welding, corners, upstands, pipe penetrations, rainwater outlets and perimeter details. These are the connections where the flat surface meets the rest of the building.

Consider a rooflight, for example. The waterproofing must connect properly to its raised kerb, and that detail needs to work with the finished roof level. Choosing the rooflight and roofing independently can leave an awkward junction to resolve later. Coordinating them early gives the installer a detail that can be built properly.

Our investment in training adds to TessCon’s existing commercial roofing services in Birmingham, giving clients another option when planning a new roof or refurbishment.

A 20-year manufacturer-backed warranty

Our RESITRIX work comes with a 20-year manufacturer-backed warranty. This warranty is available only through trained installers, making our training a practical benefit for your project.

For commercial owners and property managers, written warranty information belongs with the specification, quotation and handover records. It gives future maintenance teams a clear reference when responsibility for the building changes.

Ask us for the written warranty terms alongside your quotation. Check who provides the cover, which elements are included, what conditions apply and how a claim would be made. A manufacturer warranty and a contractor’s workmanship guarantee can have different scopes, so each should be understood on its own terms.

Warranty length also differs from expected material life. CARLISLE publishes independent research into the long-term performance of its EPDM membranes. Such research helps explain material durability; the written warranty defines the contractual cover for your installation.

Discuss your roof with TessCon if you would like to understand how RESITRIX and the warranty fit your project.

Get a Quote

Ready to get started? Request your free, no-obligation quote today and see how TessCon can deliver expert building solutions tailored to your needs.

Why RESITRIX suits commercial roofing projects in Birmingham

RESITRIX is well suited to commercial flat-roof projects, including offices, schools, warehouses and managed residential buildings. For the person responsible for the property, the priorities usually extend beyond the roof covering: keeping rooms usable, protecting equipment and planning work around the people below.

A useful project brief therefore explains what happens inside the building. A roof over a storage area may allow a different programme from one above a busy reception, teaching space or room containing sensitive equipment. Access, working hours and temporary weather protection should be discussed before the programme is agreed.

Hot-air welding offers a flame-free installation method

RESITRIX seams are welded with hot air, removing the need for a naked flame during seam formation. That is a useful consideration when planning work on an occupied building.

Heat-producing equipment still needs appropriate precautions. The Health and Safety Executive’s guidance on construction fire risks explains why sources of heat require assessment and control. Site procedures and any insurer requirements should be agreed as part of planning the work.

Refurbishment starts with the condition of the existing roof

RESITRIX can be used to overlay some existing roofs, which may reduce stripping-out and disruption. Suitability depends on a proper assessment of what is already there.

The key questions are whether the deck is sound, whether moisture is trapped within the construction and whether the existing materials can form part of the proposed system. Where investigation identifies defective layers, the scope must deal with them.

For an example of this wider approach, CARLISLE’s published refurbishment at Prince Henry’s High School in Evesham combined a RESITRIX overlay with insulation improvements and drainage work. This manufacturer case study illustrates how waterproofing can form part of a more complete roof upgrade.

The roof design matters as much as the membrane

A specification should explain how the roof manages rainwater, heat loss, moisture and exposure. These issues are easier to resolve before installation, while the design can still be adjusted.

Drainage and finished roof levels

If an existing roof has persistent standing water, ask how the proposed work addresses its cause. Falls, outlet positions and finished levels need to be considered together. Adding insulation can also change the relationship between the roof surface, door thresholds, rooflights and wall junctions.

Insulation and condensation

RESITRIX provides waterproofing. Thermal performance comes from the insulation and the complete roof construction. If improved energy efficiency is part of your brief, the proposal should explain the insulation arrangement and how moisture within the building will be managed.

This is particularly relevant when a building’s use is changing. Tell your contractor if a previously unheated space will become an occupied room, or if a refurbishment will alter ventilation. Those details help inform the design.

Attachment, edges and future alterations

The attachment method and perimeter details need to suit the building and its exposure. CARLISLE’s RESITRIX installation guidance sets out substrate requirements, installation methods and connection details.

Flag planned solar panels, replacement rooflights or rooftop equipment at the design stage. Coordinating these works can avoid paying to alter a newly completed roof and gives each contractor a clear understanding of the connections involved.

A premium flat-roofing option for homes across the Midlands

The same system is an excellent choice for high-quality domestic flat-roofing projects. A substantial kitchen extension, architect-designed addition or carefully refurbished home deserves the same attention to waterproofing and detailing as a commercial property.

For homeowners, “premium” should describe the whole result: a suitable specification, well-resolved rooflight and wall connections, considered edge details and clear warranty information. The area of the roof alone tells you little about the care its installation requires.

Appearance deserves an early conversation too. If the roof will be visible from upstairs windows, discuss the membrane finish, seam layout and perimeter trims before deciding. A sample can help you understand what the completed surface will look like.

TessCon can discuss RESITRIX as part of our residential roofing services across the Midlands. Our flat roof installation service also gives you a starting point for comparing the available systems against your property and priorities.

What affects the cost of RESITRIX roofing?

An installation price needs to account for the complete scope. The cost of membrane rolls gives you only one part of that picture.

Cost factorWhat to establish
Existing roof conditionWhether the proposal allows for an overlay, removal of existing layers or repairs to the deck.
Insulation and drainageWhich improvements are included and how they affect the finished roof construction.
Roof detailsThe work around rooflights, outlets, parapets, penetrations and adjoining walls.
Access and programmeAllowances for scaffolding, protection, waste removal and working around an occupied property.

Two roofs with the same surface area can require very different amounts of detailing and preparation. When comparing quotations, check that each covers the same work and identifies any assumptions or exclusions.

Our roof replacement cost guide for Birmingham and the Midlands explains wider budgeting considerations. For a RESITRIX project, a quotation based on your roof is the useful next step.

Plan for inspection and maintenance after installation

A durable roof still needs care. Follow the maintenance guidance provided for the completed system, including inspections and attention to drainage outlets, debris and any damage.

For managed properties, keep the specification, warranty and maintenance records accessible to whoever takes responsibility next. Before other trades add equipment or alter the roof, check the proposed work against the roofing system and warranty conditions.

Ask at quotation stage what handover information will be provided. This helps you assess the support you will have once installation is complete.

Discuss your RESITRIX roofing project with TessCon

TessCon’s trained installers bring RESITRIX roofing to commercial properties in Birmingham and premium homes across the Midlands. Whether you are planning a refurbishment or specifying a new flat roof, we can discuss the building, your priorities and the next steps towards a suitable installation.

You can also read what TessCon’s Which? Trusted Trader status means for customers for more about the business behind the work.

Request a free, no-obligation RESITRIX roofing quote. Send us your property location, approximate roof size, any known problems and your preferred timescale to start the conversation.

Get a Quote

Ready to get started? Request your free, no-obligation quote today and see how TessCon can deliver expert building solutions tailored to your needs.

RESITRIX roofing: frequently asked questions

Is RESITRIX suitable for commercial flat roofs in Birmingham?

Yes. RESITRIX is well suited to commercial flat-roof projects, subject to the building assessment and specification. TessCon offers trained installation for Birmingham property owners and managers considering a new roof or refurbishment.

Can RESITRIX be used on a house extension?

Yes. RESITRIX can be an excellent option for a high-quality extension or other domestic flat roof. The design needs to coordinate waterproofing, insulation, drainage and connections to features such as rooflights and adjoining walls.

Does TessCon’s RESITRIX roofing come with a 20-year warranty?

Yes. TessCon’s RESITRIX installations come with a 20-year manufacturer-backed warranty, available through trained installers and subject to its terms. Ask for the written terms alongside your quotation to understand the cover and conditions.

Can RESITRIX be installed over an existing flat roof?

Sometimes. An overlay may be suitable following investigation of the existing covering, deck, moisture condition and compatibility. The assessment determines whether existing layers can remain or whether repairs and removal are needed.

How much does RESITRIX roofing cost in Birmingham?

The price depends on roof size, condition, details, access and the proposed construction. Insulation, drainage improvements and removal work can affect the total. A property-specific quotation lets you compare the full scope.

Can a RESITRIX roof support a green roof or roof terrace?

Suitable RESITRIX products can form part of a designed green-roof system. CARLISLE identifies RESITRIX SK W Full Bond as a root-resistant option. Green roofs and terraces also need appropriate structural capacity, drainage, protection and, for terraces, a suitable walking surface.

Does RESITRIX roofing need maintenance?

Yes. Follow the inspection and maintenance guidance for your completed roof, keep drainage clear and arrange checks when damage or alterations are suspected. Good records help you manage the RESITRIX system and refer back to its warranty conditions.

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What Our Clients Have to Say

Hear From Our Satisfied Customers

At Tess Contractors, we take pride in delivering exceptional roofing solutions, whether it’s a large-scale commercial project or a residential roofing job, and exceeding our clients’ expectations.

But don’t just take our word for it – read on to see what our satisfied customers have to say about their experience working with us.

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David Fletcher profile picture
David Fletcher
7 October 2026
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Very good advice and pleasant team. Numerous small and medium size jobs needed to get my aged mum's home safe and comfortable to enable her to continue to live independently. Richard's team navigated communication and access challenges with ease.
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Fujiko Lowry profile picture
Fujiko Lowry
20 September 2026
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We recently had a new patio installed by TessCon and are really pleased with the finished result. The work involved removing the old decking and levelling out the ground before laying porcelain tiles and installing wooden sleepers around the patio and planting areas. The whole project took a couple of weeks to complete and the team did a great job throughout. They were friendly, approachable and easy to have around, and clearly took pride in getting everything finished properly. The patio has completely transformed the garden and we’re really happy with the quality of the workmanship and how everything has turned out. We’d definitely recommend TessCon to anyone considering a new patio or similar landscaping work.
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Peter Hackett profile picture
Peter Hackett
13 September 2026
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We originally arranged a small repair with another company, but on the first day they told us the job would need to be much larger and quoted an extremely high price. Feeling unsure, we looked for another option — and we’re so glad we did. This roofing company provided a far more reasonable quote and were honest from the start about what needed to be done. They completed the work in a timely manner, listened carefully to what we wanted, and kept us fully informed throughout. They also provided clear photos of all the work completed and explained both what was required and what had been done, which gave us real peace of mind. We are very happy with the results and would confidently recommend them to anyone looking for reliable, straightforward and professional roofing work.
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Game Ovais
17 February 2026
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I am happy with Tess Contractors and will use them again for sure. I contacted them a couple of weeks ago regarding my Garage Roof Leak and they responding promptly. - They were polite and professional. - Their pricing was fair - I did have other quotations so could compare. - They were punctual - the first time I've ever had tradespeople show up at the time they said they would. - They didn't try and sell me a new roof like other tradespeople. - I needed a repair and their repaired it for me. They did such a good job - I don't usually have positive experiences but glad I found them.
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Sarah McCaffrey
9 December 2025
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Tess Roofing (Rich and Team) have been working on our community building, completed a huge amount of work to stop leaks and weather proof the roof for the future. We are a very busy community centre with many vunerable users. Rich and has team were extremely considerate working around our schedules and supplying full details of the work for us to report back to the council. Highly recommend.
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Mick Fry
2 December 2025
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We engaged with Tess contractors (not for the first time) as we had water coming through our bedroom ceiling above the window. As we have solar panels on the rear roof these needed to be taken off before the investigation on what was required to fix the problem. Once some of the tiles had been removed it was apparent it was going to be a big job. Rich took loads of pictures so we were well informed about the state of the roof. We decided to get the whole roof replaced rather than save a little money but run the risk of further issues. We agreed on a price which was very reasonable and also agreed a schedule for the works to take place. Everyone who worked on the roof was polite and friendly especially Max worked on the roof everyday. The weather affected the schedule a little but that's not in our or the workers hands. When the job was completed everything was left clean and tidy.
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Stuart Mills
25 September 2025
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We had a great experience with Tess Contractors for the repairs on our industrial roof. They were extremely professional throughout. The team clearly explained the problems, combining overcladding and repair work, and documented everything with detailed photos. Their quote was clear, concise, and gave us various options, so we knew exactly what to expect. They showed up exactly when they said they would and kept us fully updated on the progress. After the work was completed, they provided photos and videos, which was a great way to see the finished job. We highly recommend them—they were very helpful and reliable.
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james stevens profile picture
james stevens
28 August 2025
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Excellent work from Richard and his team, everything went smoothly from start to finish. Best builder I have used thanks again 👍🏼
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Mike Strauss profile picture
Mike Strauss
16 August 2025
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Highly recommended, really knowledgeable, gave good advice, really happy with the work and all done on time. Bit of a perfectionist which is just what was needed.
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FREDERICK Plimmer
16 July 2025
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Great service experienced workers excellent job on our canopy and garage roof very satisfied would recommend to all