Single Ply Membrane Roof Minimum Fall

However both the british standards and sig advise falls of 1 40 to take account of constructional inaccuracies potential roof deflection and different types of roofing material.

Single ply membrane roof minimum fall. We also cover spray applied foam and liquid roofing options. The recommended minimum fall for a flat roof is 1 80 0 72. Membrane roofing is often used on commercial flat roofs. As the only uk manufacturers of single ply membranes we offer a full range of single ply roofing systems incorporating all the components required to deliver complete high performance flat roof solutions.

Sika sarnafil watchmead welwyn garden city al7 1bq 01707 394 444. The cost associated with the material and installation can vary widely depending on roof conditions the attachment used and the type of membrane being installed. Single ply roofing is priced per square foot and an average price for materials and installation of a 60 mil roof may range from 3 to 5 per square foot. It is accepted good practice to design in a fall or slight gradient of at least 1 60 which equates to 17mm over 1m.

Ponding water will not have any detrimental affect on the monarplan pvc single ply roofing membrane however it is recommended that roofs be designed with falls minimum 1 80 to remove water from the roof. Our technical department can design bespoke insulation schemes for individual projects and provide advice on roof fall design. Single ply roofing cost. It is recommended never to design a roof that is completely flat.

Our membranes are manufactured in our state of the art production facility in chesterfield which has bs en iso 9001 bs en iso 14001 and bes 6001 accreditations. Common flat roof membranes discussed in this article include built up asphalt tar and gravel modified bitumen and single ply membranes like epdm pvc tpo and kee. To achieve this a design fall of 1 40 1 60 should be considered. Bs6229 states that the minimum finished fall of single ply membranes at any point should be 1 80.

Tapered insulation systems are a lightweight convenient and cost effective alternative method of providing falls to the roof and can be used with our reinforced bitumen membrane rbm and synthetic single ply roof systems.