The important number to remember is 3 12.
Maximum slope for tpo roofing.
This means the roof needs to have a slope going down to drain water off it of at least 3 per foot for every 12.
2 12 16 6 no 75 22 8 m 20 year.
Ultraply tpo roofing systems guide for designers interim updates at.
1 16 12 in 12 maximum slope fully adhered system.
System requirements may vary by deck.
2 12 pavers 060 ultraply tpo max.
There are no maximum slope restrictions for the application of the fully adhered roofing system.
For example some epdm membrane assemblies have maximum roof slope limitations as low as 1 2 12.
Range of applications 1 firestone ultraply tpo systems are for use over all types of roof decks in commercial institutional industrial low sloped roofing applications.
A pvc or tpo less costly membrane would be your best bets.
The maximum recommended roof slope for mechanically attached roofing systems is 18 in one horizontal foot.
Short for thermoplastic polyolefin tpo is a single ply roofing membrane that offers excellent performance at a cost effective price.
Maximum slope mechanically attached system.
The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.
Tpo s long term heat uv and natural fungal resistance plus flexibility without need for plasticizers also make tpo a reliable low slope roofing system.
The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code.
2 12 16 6 no 250 76 2m 20 year 045 ultraply tpo 16 6 no 250 76 2m 15 year stone 060 ultraply tpo max.
045 1 14 mm 8 2 4 m 060 1 52 mm 10 3 05 m 080 2 03 mm 12 3 66 m unlimited slope in the chart below only refers to the potential maximum installation slope.
This is the minimum pitch or slope a roofing deck can be in order to install composition roofing shingles on it.
Does the 2 8 slope need a flat roof and can the company only offer a 2 year warranty.
4 12 33 3 ok ultraply tpo xr 100 045 bonding adhesive unlimited ok 250 76 2 m 15 year asphalt max.
2 as a loose laid system ultraply tpo is laid over a free floating insulation or separation layer and held in place by gravel ballast.
Pvc membrane assemblies generally have higher maximum roof slope limitations.
We recommend installing a single ply membrane over that portion of the roof with a slope less than 3 12.
The mechanically attached roofing system is not acceptable for installations on steel decks lighter than 22 gauge.
You should find a company that specializes in pvc or tpo and does some residential work.
Ponding is defined as water that has not drained or dissipated within 48 hours after rainfall.
When using a mechanical.
4 12 33 3 ok d max.
Some tpo membrane assemblies also have relatively low maximum roof slope limitations.