How To Install Roll Shingles
Cobblestone & SBS Scroll Covering Installation Details
How to install roll roofing
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Roll roofing installation.
Here we include detailed step-by-step instructions for a typical coil roofing installation task using either traditional asphalt roll covering or SBS roofing. .
This commodity series describes mineral-granule coated asphalt or SBS (rubber-based) roll roofing roofing materials, choices, installations, inspection, defects, roofing repairs, and production sources.
This article includes a description of severe wear and early on failure of a mineral-granule-surfaced roll roofing installation over an older metal roof.
We likewise provide an ARTICLE INDEX for this topic, or you lot can try the page top or bottom SEARCH BOX every bit a quick manner to notice information you demand.
Asphalt Roll Covering Installation
Ringlet covering is simplest product to install on a small-scale section of low slope roof is 90-pound roll roofing. This is an inexpensive roofing material often installed (over xv# felt underlayment) past homeowners and exercise-it-yourself-ers.
"Low Slope" means that these products are installed on roof slopes of 2/12 or more than.
Sketch courtesy of Carson Dunlop Associates.
[Click to enlarge any epitome]
Traditional asphalt-based roll roofing consists of a heavy, asphalt-saturated organic or fiberglass felt with a granular surface.
SBS or modified asphalt mineral surfaced roll roofing membranes are based on SBS, a synthetic rubber that gives improved performance over traditional asphalt-saturated felt.
Watch out: For flat roofs (slope less than ii/12) y'all should non exist installing roll covering but rather you lot should use a apartment roof arrangement such as APP or SBS modified roofing or EPDM (condom roofing) - encounter details for apartment roofs
at MEMBRANE & SINGLE PLY ROOFS
Traditional asphalt-impregnated felt roofing like that in our sketch above is installed overlapped a minimum of ii-3-inches (single coverage) or overlapped half its width or 16-inches (double coverage) or overlapped 2/3 its width to requite a 12-inch exposure and a 3-ply roof, or 3/4 of its width to give a 9-inch exposure and a 4-ply roof.
For cobblestone-felt roll roofing, less exposure and more plies = longer roof life.
SBS roofing (styrene butadiene styrene) is commonly installed as a single-ply roof with a 3 one/2-inch selvedge edge overlap.
Fiberglass mineral-surfaced roll covering is installed using mechanical fasteners (nailing), or hot or cold processes to seal between plies. Hot-mopping requires commercial asphalt heating equipment while common cold process adhesives are ordinarily brushed-on directly - no heating is required.
Plan the Roll Roofing Chore
Plan the covering chore, the chore sequence, the buy of materials, and exist sure yous have all needed materials on hand before starting the task. The bones roofing sequence is
- Audit the condition of the existing roof and roof decking
- Plan and schedule any demolition, removal of materials that must precede the new roof installation
- Take roof protection tarps or other materials if the roof might be left open and incomplete across inclement weather
- Measure the roof and calculate the materials and supplies needed: roofing, underlayment, lap sealant, flashings, nails
- Install roofing underlayment
- Install valley flashings and whatsoever other sidewall flashings that must extend underneath the finish roof covering
- Install edge deceit strips around the roof
- Install the roll covering
- Install finish flashings or counter flashings where required
Typical Curl Roofing Installation Steps & Specifications
Weather conditions: for applying scroll roofing: the roof should be clean and dry, and ambience temperatures should be at or above 50°F.
Picket out: If yous must install whorl covering at lower temperatures store information technology indoors and warm it to permit unrolling without smashing the material.
We tin sometimes spot roll roofing installed from as well-common cold rolls by after failures appearing every bit cracks, at regular (or decreasing) intervals across the width of the material.
Our photo shows our client pointing to a low slope area on a roof where mineral-granule coated asphalt coil covering was practical after shingles in that location had leaked repeatedly.
- Roof Slope: 2/12 or more. That means 2-inches of rising in 12 inches of horizontal run or steeper. Do not install roll covering on slopes of less than 2/12.
Actually? Well no. Some manufacturers such as MSA specify that their curl roofing product can exist installed on slopes down to 1/12 or 1" of slope or rising in 12" of run.
- Roll roofing status: The roll covering should exist make clean and dry when information technology'southward installed.
Don't install curl roofing whose edges are badly damaged, crushed, torn, every bit you're likely to see poor seam adhesion and early seam failure. Don't install roll roofing whose gyre was desperately squashed flat or you lot may run into early on failure cracks across the roofing width.
- Roofing deck: should be clean, dry, and free of voids. If re-roofing, remove and supercede any rotted roof decking before installing the felt underlayment.
Roof decking tin be plywood (3/8" or thicker though IMO less than ane/2" thick plywood is request for a reduced roof life), OSB (oriented strand board) that's 7/16" thick or thicker, or nominal one" thick dry, seasoned wood boards of six" in width or less.
Plywood or OSB capsule should be spaced 1/8" to 1/4" at barrel joints to avoid buckling. Wood boards should be butted closely together when nailing in place.
Watch out: if in that location are sags in the roof deck that volition event in ponding (water remains on the roof 24-hours later the end of rainfall), fix those by shimming or filling before proceeding with the roof installation. Ponding will reduce the roof life on a roll covering chore.
Watch out: some products such equally GAF Liberty™ one-ply SBS roof system must be installed over a minimum of four-ply, xv/32" (12 mm) exterior grade plywood decking. Contact GAF Technical Services at one-800-ROOF-411 for more information on other deck types that may be acceptable.
- Roofing underlayment: install the manufacturer's recommended underlayment on the roof deck before bringing upward and installing the roof covering itself. The post-obit is excerpted from GAF's whorl covering installation instructions cited below:
Underlayment beneath Mineral Guard® scroll roofing has many benefits, including acting as a secondary water resistant ply and preventing sap in some wood decking from reacting with the Mineral Guard® scroll roofing.
Underlayment is besides required by some lawmaking bodies. Consult your local building section for its requirements.
Where an underlayment is to be installed, a breather-type underlayment such equally GAF Shingle-Mate® underlayment is recommended.
In areas where leaks may be caused by water backing up behind ice dams, Weather Watch® or StormGuard® Leak Barrier should be used at the eaves. Underlayment must be installed flat, without wrinkles.
- GAF op. cit.See details at FELT UNDERLAYMENT REQUIREMENTS
- Roof flashings: exist sure that all of your flashing and baste edge is in place before starting to unroll the roofing itself. You won't enjoy trying to lift upward roll roofing to install a segment of flashing or baste edge that you forgot.
- Prepare roof edges - deceit strips: install baste edge and install 9" cant strips of coil roofing fabric along the rake and eaves edges (gable ends and lower roof edge) such that the roofing strip overhangs the roof deck past 1/4" to 3/viii". Nail the roofing strips parallel to the roof edge, set-in 1" and 8" from the roof edge with nails spaced four" o.c. in each row.
- Roofing over existing roof membranes: where permitted and where not exceeding your local building department's maximum number of roofing layers (often three), be certain that the roof surface is make clean, dry, with no protruding nails.
Cutting out any raised wrinkles or blisters or buckles and nail edges of such cuts down so that the re-roof surface is smooth. Don't roof over droppings nor over wet existing roofing.
Sentry out: some products such every bit GAF's Liberty™ i-ply self-adhering SBS roofing organisation (cited below) are installed straight onto cleaned, primed plywood. Any existing roof coverings are completely removed earlier starting the installation.
- Bringing scroll roofing upwards to the roof deck: distribute rolls on the roof to avoid concentrated weight and place rolls at right angles to gradient and stopped confronting rolling away.
Ane Standard Pallet of roll roofing carries 28 rolls and weighs about ii,100 lbs. I would avert placing that much weight in a single spot on the roof. Elsewhere at InspectApedia.com we've documented a truss roof that broke and complanate, probably considering of concentrated loads of roofing materials that exceeded the original roof design capability.
Watch out: how you place rolls of curlicue roofing on the deck in preparation for installation. They roll.
For a description of what can go wrong when your're dropping rolls of roofing felt onto the roof deck,
come across SENECA HOWLAND House
- Roll covering installation length: on roofs larger than 36 feet in width you lot might be able to install entire rolls without cutting by starting the roll at one cease and unrolling and nailing, but the risk is that your ply is not kept horizontal. Don't try information technology.
Cut the roll roofing into working lengths and stack them on the upper roof virtually the ridge, assuasive the cut-lengths to warm and flatten before moving them into position down-roof for installation.
Tarco and other manufacturers recommend that you cut the roll roofing into "manageable lengths" before installation. MSA recommends cut the roll roofing into lengths no longer than eighteen anxiety.
- Curlicue covering starter course: the ends of the ringlet roofing should be affluent with the underlying cant strips at the roof gable ends or rakes, and the lower edge of the kickoff course should be flush with the lower border of the cant strip that was nailed forth the lower roof edge.
The upper edge of the starter course is nailed in place. Continue nails high plenty that the successive course will overlap the nails by at least 1".
The lower edge of the outset grade of gyre roofing is cemented downward to the deceit strip by coating the deceit strip with lap cement.
Lookout man out: when lifting the lower edge of the starter grade to use lap sealant in common cold conditions take care to lift as little as possible and to avert bending the material backwards or you lot'll create a futurity stress fissure or roofing failure.
Nosotros sometimes encounter this roofing failure as a crevice along the starter course that'south parallel to the roof edge.
- Coil roofing overlap - horizontal choose the overlap width co-ordinate to the number of plies of roof to be installed: 2" or three" (varies by manufacturer) or 16", 12" or 9" exposure for ii, 3, or iv ply roofs respectively.
SBS scroll roofing overlap width is commonly three.iv" or 3.vi", varying by product, and also referred to equally the selvage edge width.
The minimum caput-overlap of successive roll roofing courses would be 2" in a one-ply roof job.
When rolling out and positioning the roofing, I adopt to measure upwardly the proper exposure from the lower edge of the course below to the lower border of the new form to marking or lay out the proper exposure between courses and to mark the adhesive or mop line.
- Roll roofing end overlaps - where you lot must abut the ends of adjacent sections of roll roofing overlap and seal those by 6-inches.
- Roll roofing at hips and ridges - bring the roofing courses on either side of a hip or ridge up so that the roofing edges meet along the hip or ridge. Then seal the hip or ridge using 12" x 36" strips of roll roofing bent lengthwise so that 6" lies on either side of the hip or ridge.
Overlap the ridge or hip sealing strips at abutting ends by half-dozen" and seal these with lap seal. Lap these strips and so that the exposed ends are facing away from the direction of prevailing winds.
Watch out: be sure to warm these strips earlier bending and nailing if the atmospheric condition'southward cold, otherwise the hip or ridge volition fail with a fissure that you'll later come across running shut to the elevation of the ridge or hip.
- Lap sealant - manufacturers typically recommend no more than 1/eight" thickness of lap cement. Spread lap sealant evenly, smoothly, and without voids.
Sentinel out: adhesives between plies should be spread evenly and encompass all of the lapped surface (two" 3", 16", 12" or even nine" for a iv-ply roof).
Simply don't blob on so much adhesive that runout streams down the lower roof surface. Non only is that a corrective defect but a too-thick adhesive coating will cause baking leading to a reduced roof life. Sealant that's as well sparse or likewise thick are both errors.
- Roofing nails: use galvanized #11 or #12 covering nails, typically i" (or longer) with a 3/8" head (never smaller). In 1/2" roof decking, the blast shaft must exist long enough to penetrate the roof deck and so that the signal of the nail is visible. Otherwise there is not plenty shaft-to-woods contact to avoid boom withdrawal and wind impairment.
GAF instructions for applying mineral curl covering recommend use of galvanized, zinc-coated steel, or aluminum 10-12 gauge barbed, deformed, or shine-shank roofing nails and notation that the nail must exist long enough to penetrate at least 3/4" into the forest roof deck or "just through" plywood or OSB decks.
Sentry out: practice not count the indicate or tip of the boom when measuring the amount of penetration into the woods deck.
We mentioned nail location and spacing to a higher place. All of this discussion presumes you're using the curtained nail method for installing scroll roofing - in my Stance that'south a more-durable roof chore than using exposed covering nails.
How to Install Curlicue Roofing for Maximum Life
Nonetheless scroll roofing installations will take a longer life if installed co-ordinate to the production manufacturer'southward instructions, nailed at proper intervals, and with seams properly sealed.
It's besides important to install roll roofing over a polish sound roof deck.
If the roof decking sags, ponding on the roof surface after rain may reduce its life.
Overlapping strips of asphalt roll roofing are installed over the roof surfaces with overlapped border joints sealed, normally with a heated asphalt compound, or cold-applied using a similar sealant that functions at lower temperatures.
Sketch courtesy of Carson Dunlop Associates.
Probably in role because asphalt roll roofing is typically used on low slope and nearly flat roofs, information technology tin can have an anticipated vesture life of less than 10 years, often five years.
The life of scroll roofing may be extended by coatings.
Roll Roofing Manufacturer'southward Installation Instructions & Product Specifications
Illustration: SBS blazon ringlet covering or BUR rolls from MTechnology cited below.
- BP Slate Surface Curlicue Roofing and BP Mineral Surface roll roofing and related products are described in BP'due south Asphalt SHINGLE APPLICATION INSTRUCTIONS [PDF], Building Products of Canada, Co., 9510, St. Patrick Street, LaSalle (Quebec), Canada H8R 1R9 and BP Canada 3703-101 Avenue N.Eastward., Edmonton (Alberta), Canada T5J 2K8, retrieved 2022/05/01 original source:
- GAF MINERAL Baby-sit® RESIDENTIAL ROLL ROOFING APPLICATION INSTRUCTIONS [PDF] (2011) GAF Corporation, 1361 Alps Road, Wayne NHJ 07470 USA
- GAF Liberty™ SBS SELF-ADHERING Roofing SYSTEM [PDF] One Ply Installation Instructions for Plywood, self-adhesive cap sail roofing (2016) GAF, Op. Cit.
- Gap, APPLYING Gyre ROOFING [PDF] G.A.P. Roofing Inc., Yard.A.P. Roofing Inc. 4444 Hunt St, Pryor, OK 74361 U.s., Tel: 800-880-9808 or G.A.P. Covering of FL, LLC 12120 SE County Rd 137 Jasper, FL 32052 Usa, retrieved 2022/05/01 original source: https://gaproofing.us/wp-content/uploads/2014/01/app_roll_roofing.pdf
- MB Engineering science, SUPERCAP SBS Modified MINERAL SURFACED ROLL Covering APPLLICATION INSTRUCTIONS [PDF] MB Engineering science CO., 188 South Teilman Ave, Fresno CA 93706-1224 United states of america, Website: world wide web.mbtechnology.com, Tel: 559-233-2181, Email: info@mbtechnology.com retrieved 2022/05/01 Lowes - in English & Spanish. Instrucciones para la aplicación de Cubierta de Tela Asfáltica SBS de Superficie Mineral Modificada
MBTechnology specializes in manufacturing SBS Modified Bitumen Roofing & Underlayment systems. Layflat SBS is bachelor in four weights, 25-40-50 & 60 lbs/foursquare, reinforced by polyester, drinking glass, or fiberglass scrim.
Production clarification extract:
Supercap SBS is an SBS modified asphalt mineral surfaced ringlet roofing membrane. Supercap is reinforced with a fiberglass mat and fire rated.
SBS is a constructed rubber that gives asphalt enhanced performance characteristics.
SBS modified membranes exhibit loftier multi-directional strength and excellent cold temperature flexibility in addition to elongation and recall properties far superior to traditional asphalt roofing membranes.
These outstanding properties provide supercap SBS with excellent resistance to "thermal shock," a major contributor to roof failure
. - MSA MSR MINERAL SURFACED ROLL ROOFING Application INSTRUCTIONS [PDF], MSA Mid States Cobblestone & Cant Strip Inc., 1637 51st Avenue, Tuscaloosa, AL 35402 Us, Tel: 800-489-2391
- Owens Corning, FIBERGLAS® MINERAL SURFACED ROLL Roofing APPLICATION INSTRUCTIONS [PDF] (2008) Owens Corning Covering and Asphalt LLC, One Owens Corning Pkwy, Toledo OH 43659 Us, website: www.owenscorning.com Tel: 1-800-GET-Pinkish , 2" & 4" Selvedge Mineral Surfaced Whorl Covering Instructions, retrieved 2022/05/01 original source: https://www.owenscorning.com/NetworkShare/Roofing/100491-D-MSR-Roofing-Installation-Instructions.pdf in English and Spanish.
Instrucciones de aplicación de rollos de superficie mineral para techos FIBERGLAS® - Tamko® SLATE SURFACED Whorl Roofing Awarding INSTRUCTIONS [PDF] Tamko Covering Products, Inc., Website www.tamko.com
- Tarco, Ringlet Covering INSTALLATION GUIDE [PDF] (2011) Tarco, One Data Fashion, Suite 225, Piffling Rock AR 72202 USA, Tel: 800-365-4506, Website: world wide web.tarcoroofing.com retrieved 2022/05/01 from Home Depot
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