Liquid waterproofing systems are brushed or rolled onto a prepared roof, curing into a seamless membrane. They work well around complicated details, pipes and plant where sheet materials are tricky.
Not every roof is suitable for an overlay. We test the existing covering and deck before recommending a liquid system.
What this service covers
- Liquid overlays on suitable existing roofs
- Detailing around pipes and outlets
- Gutter and parapet waterproofing
- Small commercial flat roofs
Signs you may need it
- Sound deck but ageing covering
- Many awkward penetrations
- Wanting to minimise disruption
How we approach it
- 01
Assess
We check the substrate, adhesion and moisture.
- 02
Prepare
Cleaning, repairs and primers as required.
- 03
Apply
Coatings are applied with reinforcement at details.
- 04
Cure and check
The finish is allowed to cure and inspected.
What affects the quotation
Your free written quotation is priced for your property and covers:
- Suitability of existing surface
- Area and details
- Weather
- Number of coats and reinforcement
- Access
Any guarantee depends on the job and materials and is stated in your written quotation.
Liquid roof waterproofing: common questions
Can liquid go over my old felt?
Sometimes, if the felt is well bonded and the deck is dry and sound. If not, stripping first is the right approach.
Is it the same as a cheap paint-on sealant?
No. Proper liquid systems are applied to specified thicknesses with reinforcement. Short-term sealants are a different product.
How long does it take?
Small roofs may be completed quickly in good weather; curing times depend on the product and conditions.