minimum slope for composition deck material

Building Guide - City of Casper

Fire Resistant roofing materials may be re- quired by your ... about the requirements for low slope appli- cations. ... Apply new, minimum 15# asphalt saturated felt ... decking material. For open soffits ... and extend up the roof deck a minimum.

Low Slope Roofing Products, Materials, Inspections, Low Slope or ...

Recommended materials to use on low-slope roofs. ... as 2:12 as long as a fully waterproof membrane is installed over the decking. [Click to enlarge any image or table]. In this case, the finish roofing material, whether asphalt shingles, wood, ...

2012 Pool and Spa Code Affects Deck Builders | Professional Deck ...

The Pool and Spa Code will require decks to be sloped and drained, and deck boards ... in section 306 applies to the slip resistance of the decking material itself. ... goes on to require that wood and wood-plastic-composite decks be sloped at ...

It All Starts with the Roof Deck - Buildings

Not only that, but roughly two-thirds of all low-slope roofing activity involves ... Composite decks of lightweight insulating concrete on corrugated steel or form boards ... Zinc (galvanized decking meeting ASTM A653, minimum yield strength 33ksi ... Wood Sheathing sawed lumber, plywood or OSB (oriented strand board).

Building Waterproof Roof Decks | Professional Deck Builder ...

What kind of slope is designed into the framing? ... Always check the plans before building; decks should be a minimum of 1 1/2 inches below the .... Unfortunately, there's no practical way to lap materials up a deck-mounted metal rail post.

minimum slope for composition deck - Balcony WPC Decking Price

Landmark Series - CertainTeed. Limitations: Use on roofs with slopes greater than 2" per foot. Product Composition: Landmark series shingles are composed of ...

The D's of Decking - Waterproofing Flat Roof Decks - Duradek

Slope. A proper deck slope of 1/4” in 12 will help reduce ... up the existing wall and covered with metal reglet flashing or ... membrane extend a minimum of 6” up the vertical surface ... conform to the same material standards as PVC. Roofing ...

Minimum Roof Pitch for a Covered Porch | Home Guides | SF Gate

Determine the minimum slope of the roof based on the roofing material. ... The minimum pitch for a standing seam metal roof is 1:4, or 3 inches rise to 12 inches ...

Seattle DPD - 2012 Seattle Building Code, Chapter 15 ... - Seattle.gov

metal or of the same material as the roof covering. Exception: Unit ... are mechanically attached or adhered to the roof deck shall be designed to resist the ... slope roofs (roof slope < 2:12) in accordance with Section. 1507 shall resist .... and Group U occupancies, where there is a minimum fire-separation distance of 6 feet ...

CHAPTER 15 ROOF ASSEMBLIES AND ROOFTOP STRUCTURES ...

Roof decks shall be covered with approved roof coverings secured to the building .... Low-slope built-up, modified bitumen and single-ply roof system metal edge .... Class A roof assemblies include minimum 16 ounce per square foot (0.0416 ... Nonclassified roofing is approved material that is not listed as a Class A, B or C ...

Plaza Decks | WBDG Whole Building Design Guide

May 10, 2016 ... Design of plaza deck surfaces, green-scape and tree or soil planter ... sand, asphalt material, pea gravel, or a sand-cement mortar setting bed. ..... in all plaza decks should slope a minimum of 2% away from the building or ...

STRUCTURE magazine | Low-Slope Roof and Deck Design ...

The condition is exacerbated for materials susceptible to creep deflection, such as ... Figure 1. Common minimum roof slope plan with valley. Building offsets are ... deflection as a design parameter for metal plate connected wood trusses.

Roof Coverings and Best Practices - FEMA

roof coverings as materials, systems, or fasteners can be weakened from extensive corrosion. ... In some of those buildings, structural roof damage itself was quite minimal yet the ... factors to consider, such as the roof covering, deck, ends, underlayment, ... and metal roofing) and for roof coverings typically used for low-slope.

What is the minimum pitch/slope of an asphalt shingle roof?

Sep 5, 2014 ... Manufacturers of asphalt shingles recommend a pitch of 4/12 or more .... for low-slope roofs is a self-adhering bituminous membrane material is ...

Estimating Roof Pitch & Determining Suitable Roof Types - DIY Guide

Jan 11, 2017 ... It is the same material as asphalt shingles and is sold in rolls that will cover one square (100 ... A minimum pitch of 3-in-12 will be required.

Roof deck materials to ensure a stable roof surface | IKO

Oct 4, 2016 ... The type, grade, thickness and installation of materials used for roof decks should conform ... Let's take a look at 3 roof deck materials we suggest. ... Roof rafter spacing (mm), Min. thickness of plywood (mm), Min. thickness of ... A flat roof can be connected to the existing slope roof of the house and gives a ...

Minimum Slope for an Asphalt Shingle Roof - IKO Building ...

Read about the minimum slope requirements for installing asphalt roof ... You can measure the roof slope on the bottom side of the roof deck at an easily ...

How Roof Pitch Affects Your Choice of Roofing Materials - The Spruce

2 days ago ... Roof pitch is an all-important indication of slope that tells you which ... an infinite choice of any material on the market: asphalt, composite, ... Slopes above 19/12 are not recommended, since tiles on very steep roofs can rattle.

DiamondDeck - CertainTeed

decks as a water-resistant layer beneath asphalt roofing shingles, wood ... Before application to existing roofs, remove all roofing materials, then clean the roof deck ... to <4:12 Slopes): When not using CertainTeed recommended WinterGuard.