Green Roof Minimum Pitch

It is uncommon to find a roof below 15 but for those very low pitch applications there are interlocking clay pantiles available suitable for use down to 12 5.

Green roof minimum pitch.

Drainage thickness of growing media plant varieties etc. Roof slope of 1 4 per foot minimum is required on all roof systems. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. Sloped roofs retain less water in general and the moisture content varies from the ridge to the eave lowest edge of the roof.

Secondary roof drains are to be positioned on the roof so that water will drains to the primary upslope and they should not be installed at the same elevation as the primary. To find the best angle for a greenhouse roof take your latitude and add 20 degrees. Let owens corning help you determine when it is time for a new roof and then let us help you choose the shingles for your roof that are right for you. Permanent solution for pitched green roofs without a specialised anti slip system.

It is the task of the designer to make adjustments in the green roof system accordingly e g. Generally suitable for inverted roofs if applicable. Experience the total owens corning roofing system and high quality roofing shingles. Owens corning produces high quality asphalt coating asphalt sealants and adhesives for asphalt shingles.

But since there is still a wide variety of slate roofing systems there are occasions when the minimum pitch can go down to as low as 15 0 depending on the uniqueness of the roof. Slope should be built into the structure on new buildings. What is the maximum pitch possible for a green roof with vegetation blankets. Green roofs can increase a building s marketability.

We can even help you find a professional to install it. Varied substrate depths and vegetation forms possible. With regards to the pitch the building standard code bs 5534 recommends a minimum pitch of 20 0 for slate roofs. Generally speaking vegetation blankets can be applied on surfaces with a pitch up to 45.

However you can only use this pitch with built up roofing or specialized synthetic roofing. An extensive green roof can reduce sound from outside by 40 decibels while an intensive green roof can reduce sound by 46 50 decibels peck et al. Traditionally a minimum roof pitch of 20 was recommended in bs 5534 but modern tiles and slates have now been designed for applications as low as 15. Green roofs have excellent noise attenuation especially for low frequency sounds.

The best angle for greenhouse glazing in the roof is not as clear cut as some solar greenhouse designers make it sound. For roof lengths greater than 6 metres an anti slip system may be required sublect to individual project assessment.