Liquid Applied Roofing Systems
Whether you’re looking for liquid roofing repair or replacement, we have a wealth of experience in applying liquid roofing to commercial properties
What Is Liquid Applied Roofing?
Liquid applied roofing is a polymeric coating, usually polyurethane or PMMA, that cures into a single seamless waterproof barrier across your roof. It’s sometimes called cold liquid applied waterproofing, liquid applied membrane (LAM) or cold applied liquid roofing.
A typical system is built up in layers to the manufacturer’s specification:
- Primer
- Base coat
- Reinforcement matting
- UV top coat
Liquid roofing offers a long-term solution to the problem of water ingress and can last up to 25 years, before needing any kind of repair. These types of roof coating systems also offer a cost effective repair option and superior alternative to traditional roofing substrates.
What Roofs Are Suitable For Liquid Applied Membrane?
Liquid roofing systems are versatile, which is why they’ve become a common choice in many commercial and industrial roofs. The coating can be applied to flat, pitched or domed roofs. It can be applied over most existing substrates, including mineral felt, mastic asphalt and more recent PVC and TPO membranes. If a full recover isn’t necessary yet, our felt roofing systems can also be a suitable lower-cost alternative worth considering.
This makes it a good option for roof maintenance and refurbishment alongside new builds. If your existing roof is sound underneath, but failing on the surface, a liquid applied system can extend its life without a full replacement.
If you’re not sure whether liquid applied roofing is a good choice for your building, our free site survey can tell you.
Benefits Of Liquid Applied Roofing
The main benefits of liquid applied roofing are:
- It’s cost effective
- Long-lasting
- Easy to install
- Allows for insulation
Liquid applied roofing systems are highly resistant to UV degradation and other harmful airborne pollutants. They’re also safer and easier to install than other types of roof systems, as there is no hot work involved.
Insulation can be built into a new flat roofing scheme to bring it up to current warm roof regulations. Tapered insulation can be designed to clear ponding water and discharge rainwater properly from roof level. Insulated roof lights can be added to bring more daylight into the building below.
Polyurethane & PMMA Liquid Applied Systems
NWIR installs liquid systems in polyurethane and PMMA compositions. The right choice depends on your roof. Polyurethane is a flexible, hard-wearing finish suited to general flat roof waterproofing. PMMA cures fast, even in lower temperatures, which makes it useful for detailing, for roofs that cannot stay out of use for long.
Our surveys can tell you which composition fits your roof, your access constraints and your timescale and the recommendation is explained in plain terms.
Why clients choose NWIR
You get a diagnosis before a quote, so you pay for the fix your roof needs.
You deal with one firm from survey to guarantee.
You get a manufacturer-approved installation backed by a warranty.
You can keep your site running, because we don’t need to strip your roof for a liquid overlay.
Book A Survey
Book a free site survey and we’ll come to assess your roof, diagnose the problem and give you a recommended cost and action plan for the right way to either treat or replace your roof.
When to book a roof moisture scan
Most clients come to us at one of four points, when the cost of guessing what is wrong with the roof starts to outweigh the cost of finding out.
- A leak keeps coming back after repair. The scan shows how far the water has travelled, so the next repair deals with all of the wet area rather than just the visible one.
- Your roof is due for refurbishment. Knowing which areas are wet tells you whether parts of the existing roof can stay in place or need to be stripped.
- You are setting maintenance budgets. Evidence of the roof’s condition lets you plan spending instead of reacting to the next leak.
- You are buying, selling or leasing a building. A scan gives you the roof’s real condition before you agree on a price or sign a lease.
From scan to targeted repair
Because we are both a roof surveying company and a roofing contractor, the quote that follows your survey is a full project costing, including the access and health and safety requirements of the job. When only part of your roof is wet, the work can be limited to those areas through flat roofing repairs rather than a full replacement.
Materials are installed by manufacturer-approved operatives, and new roofing can carry a single point guarantee of between 10 and 25 years, depending on the project.
Accredited roof surveyors and contractors
We are members of the National Federation of Roofing Contractors (NFRC) and accredited under CHAS and Constructionline. You can see the full list on our awards and accreditations page.
Other roof surveys and diagnostics
A moisture scan tells you where your roof is wet, but it is not always the best tool for finding where water gets in. Electronic leak detection locates leaks in most types of waterproofing membrane, while a commercial roof survey assesses the overall condition of your roof. You can see every method we offer on our roof surveys and diagnostics page.
Book a free roof survey
If you suspect water is trapped in your roof, finding out how far it has spread is the first step towards fixing only what needs fixing. Book your free site survey, and we will recommend the right scan for your building.
Call us on 0800 046 1500, Monday to Friday, 9am to 5pm.