Fitting Roofing Felt Flat Roof

While laying felt is not an easy job it can be done by anyone who has the patience to deal with it.

Fitting roofing felt flat roof.

Layers of bitumen felt are heat welded onto each other to form an impenetrable barrier. Begin at the bottom right or bottom left of the roof. For hip type shed roofs which include slopes on all 4 sides begin at the square hip at the top of the roof. The rolls of felt are quite heavy and to avoid damage must be handled with care.

Step by step guide for felting a flat roof. These applications are ideal for flat roofs or protective surfaces under roof level decks. The substance itself is made from bitumen which comes from the distillation of crude oil that has been either mixed with sand or crushed limestone. This guide will use the more durable 30 roofing felt although you can use 15 felt.

This is to ensure that the roof is ready for the battens to be fitted which will secure the tiles or slate in place. Afterward roll the felt away from you lengthwise along the lower edge about 10 feet 120 in. In terms of materials please note that there are several different weights for the roofing felt. The best time to lay a felt roof using cold applied adhesive is when the weather is warm but this means that working on a flat roof can be exhausting work with the sun s heat and the heat reflected from the felt already laid.

The basics of fitting the felt is held to the rafters by first nailing direct and then by the wooden battens which are used for fixing. Installing the roofing felt does take care but can go very quickly. Felt is laid on a flat roof to help keep the roofing system waterproof. This type of flat roofing felt has been in use for decades and is still used today.

To obtain a combination of cost and performance one option is to fit one of strip of the more expensive alternatives along the bottom of the roof while using traditional bitumen felt for the rest of the roof. 1 built up torchon felt system. Bituminous felt is a form of waterproof sheeting that is used to cover flat roofs or as an underlay beneath slate or tile roofing. As you roll it out make sure that it remains flat.

Follow the 10 steps below in order to felt a flat roof. Step 1 prep work. Over boarding the fitting of new 18mm osb 3 sterling board on top of the existing roof or stripping the old roof covering and fixing directly over the previous timber roof deck. Here is a video showing how the felt is installed on the flat roof.

When the rafters and the frame of the roof have been fitted or if you are simply replacing the tiles or slates when they and the batten underneath have been removed the next stage is to lay the roofing felt or roofing underlay. Here are simple steps to get you started. Some roofing felts are actually glued down.