London Flat Roofing. 154c Fleet Road, Hampstead, London NW3 2QX
A vapour control layer helps you shield your building from the consequences of condensation. Condensation is generated when warm moist air rises and condenses into a liquid on contact with the cooler areas above the insulation. The notion behind a vapour control layer is to install it on the room side of the insulation so it stops the passage of warm moist air entering the structure.
There are two problems with GRP flat roofs. Firstly it’s very difficult to get a skilled person to lay GRP correctly – you really need to have been laying GRP for some time before you understand and can prevent any problems.
There are numerous benefits and advantages of using solar reflective paint on your flat roof. Here are the top 3 reasons we think you should consider using a solar reflective paint on your flat roof.
This roof was particularly dirty. We had to jet wash it off and then use a fungicidal wash before it was ready to paint with the solar reflective paint. Minor repairs to the asphalt were made using a liquid roofing system.
Having watched many of your excellent videos, I decided on a cold roof because of thermal bridging issues. I must disagree with a comment made at the end of this video based on theoretical knowledge only i.e. no access to thermal imaging equipment.
Constructing a warm roof on a new extension with parapet walls, I will have surplus amounts of insulation left over and am considering adding this insulation to the underside between the joists to double up the insulation, would this install have any negatives?
Unless Europe has some miracle EPDM I don’t know about after 4 decades as a journeyman roofer; the walls, roof and chimney flashing will all fail within a decade. The rubber will shrink and pull off the walls, a product that Firestone, Versico aka Goodyear and Carlisle EPDM roofs mandate at walls is called RUSS strip and you didn’t install it.
As discussed on the phone, we are looking to have our flat roof (extension at the back of the house) insulated and the roof covering replaced, as we’ve had a leak into our son’s bedroom below – probably where the drain enters the roof. A builder said the roof covering should be below the black bit around the bottom of the drain, not above.
In England, we put the vapour control layer the warm side of the roof we also don’t vent our warm roofs.
As a company, we don’t use a naked flame on a roof, so we don’t use felt. No flames no fires. If we did I we still wouldn’t use mineral felt, felt only comes 1m wide, so you end up with lots of joints, joint means possible leakage at some time. We use EPDM rubber, its good and comes in large sheets, fewer joints fewer problems down the line.
