What roof Waterproofing covers
Roof waterproofing seals a roof surface with a membrane or liquid applied system. It only performs if the surface drains and is dry when the system goes down, which is why the falls, the outlets and the substrate moisture come first in the sequence.
Roof waterproofing seals a roof surface with a membrane or liquid applied system. It only performs if the surface drains and is dry when the system goes down, which is why the falls, the outlets and the substrate moisture come first in the sequence.
Coating and membrane work that seals a roof surface once the drainage beneath it works.
Waystar carries out this work on residential and commercial property in Brooklyn and across New York City. Every project starts with a look at the building, and the scope, the materials and the figures are written down before anything begins.
When might you need it?
These are the signs owners usually notice first.
- A roof that has been recoated repeatedly and keeps letting water in
- Blisters or bubbles lifting under the existing coating
- Splits opening at upstands and around penetrations
- Coating peeling away in sheets rather than wearing evenly
- Damp appearing below immediately after rain
What the work involves
- Existing build up tested for adhesion and trapped moisture
- Failed coatings stripped back to a sound substrate
- Falls and outlets corrected before anything is applied
- Substrate dried and primed to suit the material
- Upstands, laps and penetrations reinforced
- System applied to the specified thickness and checked
How the process works
Test what is already there
Adhesion and trapped moisture decide whether anything can bond to the existing surface.
Correct the drainage
A coating asked to hold standing water will fail regardless of quality.
Prepare and prime
Stripping, drying and priming take up most of the programme and decide the result.
Apply and verify
The system goes on to specified thickness and the roof is checked before sign off.
What you get
- A system bonded to a prepared surface instead of a failing one
- Detailing at the junctions where roofs actually leak
- An end to paying for a recoat every couple of years
What affects the scope
- How much failed coating has to be stripped
- Whether moisture is trapped in the existing build up
- The number of upstands and penetrations needing reinforcement
- Weather windows, since most systems need dry conditions to cure
This is a preliminary planning range, not a quote. A property visit is required before any price is confirmed.
Frequently asked questions
Can you coat over the old system?
Only if it is sound and compatible, which we test rather than assume. Coating over a failing layer transfers the failure to the new surface.
How long does it need to stay dry?
It depends on the product, and it is stated in the scope. Applying just before rain is the fastest way to waste the work.
Is this the same as a new roof?
No. Waterproofing seals a surface. If the deck underneath has been reached by water, that is a roofing job first.
Services often needed alongside this
This service is part of Waterproofing.
Related work
