Flat Roof Condensation Solutions

Simply adding more holes on the surface of the roof or the use of roof vent tiles can make a huge difference in as far as improving the loft ventilation is concerned.

Flat roof condensation solutions.

Insulation also helps diminish condensation issues. Add a preinstalled membrane to absorb and release the condensation as it forms with the natural weather cycle. When your roof is already in place there is unfortunately no direct or easy solution to the problem of condensation. For clarity flat roofs actually have a slight slope to allow rain water to drain off the roof but they seem flat when compared with more traditional steeply sloped roofs.

It s designed to last decades but with problems like roof condensation moisture damage can dramatically cut even the best roof s lifetime short. Insulate and try to keep from reaching the dew point. Condensation isn t good news for a flat roof. This is especially so if it occurs within the roof s structure itself as this can lead to decay in the roof timbers which is very difficult to spot.

Be vigilant about your roof. The cold deck solution there are two forms of flat roof construction which can reduce the risk of condensation forming. Traditionally we ve insulated the roof panel to try and keep the temperature on the panel from reaching the dew point. Climb on the ladder and use your hammer and crowbar to remove the tin roof from the wooden frame.

It can also reduce thermal insulation performance which can be a particular problem during winter. For example you can introduce vents by replacing some of the roof tiles. Vapor retarders are the true heroes here. The real key to avoiding moisture and condensation problems in low slope and flat roofs though is to keep moisture out of the ceiling in the first place.

This includes defects in the roof membrane leaks at penetrations at parapet walls and at any other flashings on flat and low slope roofs. This helps to prevent moisture build up on vulnerable materials like wood or insulation. However vapor barriers a k a. The slope should be a minimum of 1 in 80 but in practice a minimum slope of 1 to 40 should be used to allow for deflection of the roof and for normal building tolerances.

Step 2 plywood roofing. These membranes usually made of polyethylene keep some water vapor from passing through. Essentially thermal insulation can either be placed above or below the structural roof deck or waterproofing layer. Condensation is never good news for a flat roof.