It will also require special engineering to accommodate the additional structural weight as well as rooftop hvac equipment and drainage.
Install flat roof material.
The 3 most common materials used for flat roof construction.
Pvc vstpo these roofing systems are set up as thin sheet products 0 030 3.
Prepare the roof by tearing off the old shingles or by preparing for a reroof.
This is the fastest and easiest method of installing a flat roof.
The greatest guide to flat roof materials installation costs 2020.
Pvc roofs are especially strong and durable featuring a minimum breaking point of 300 pounds per inch compared to the industry recommended 200 ppi.
Just enough slope to drain water but also flat enough to be a problem if not constructed properly.
Metal has quickly become the standard roofing material for commercial and flat roofing systems and for good reason.
The installation process for a flat roof varies depending on the type of roof installed.
Pvc single ply membrane arguably the most popular of all flat roofing materials some contractors even install only pvc membranes for higher end residential installations pvc membranes are a single layer of thermoplastic material.
Working with a helper expect to spend half a day installing flashings and roll roofing for a 700 square foot roof with modest complications.
Single ply membrane roofs no matter what they are made of are generally heated stretched and adhered directly to the roof in a single layer.
Of course flat roofs are not flat but have a very slight roof pitch of between 1 4 to 1 2 per foot.
Hot tar and gravel.
A flat roof is the best material on a very large size building.
For that reason cold flat roof construction needs to keep in mind the need for unblocked airflow.
Metal is one of the most durable roofing material to install however the initial investment is much higher up front than other commercial and flat roofing solutions.
Installing a pitched roof on such a building is not recommended because it will be a lot more difficult and costly.