What do I put under cedar shingles?

Author: Concepcion Murphy  |  Last update: Wednesday, June 22, 2022

Felt underlayment/tar paper

tar paper
Common grades include 10-, 20-, 30-, and 60-minute. The higher the rating, the heavier and more moisture-resistant the paper. A typical 20-minute paper will weigh about 3.3 lbs per square, a 30-minute paper 3.75, and a 60-minute paper about 6.
https://en.wikipedia.org › wiki › Tar_paper
: Felt materials are a traditional underlayment option for cedar shingles made from a base of natural materials like wood cellulose or synthetics like fiberglass and coated with a protective asphalt coating to repel moisture and debris.

Do you need underlayment for cedar shingles?

While cedar is one of the most versatile and durable materials you can use to build your roof, no roofing job is complete without a proper underlayment for protection. Underlayment is placed right over the roof deck beneath everything else, including insulation.

What do you put behind cedar siding?

Thorough caulking of all joints is recommended including butt joints and where siding contacts openings or trim. Use only non-hardening caulks such as polyurethane, polysulfide or latex-silicone. Pure silicon caulks do not work well on cedar and are not recommended.

What is under cedar shake roof?

Under the Cedar Shakes are furring strips. Furring strips are 4” wide boards that are spaced apart several inches, to hold up cedar shakes while allowing them to breathe. This does not work well with asphalt shingles because asphalt shingles are designed to go onto a solid wood surface.

Does a cedar shake roof require underlayment?

Shakes should never have underlayment installed except where an ice barrier is required over solid sheathing. Instead, interlayment is required. Interlayment consists of an 18-inch-wide strip of 30-pound black felt installed between courses of shakes.

How to Install Cedar Shingle Siding | This Old House

What type of sheathing is most commonly used beneath wood shingles and shakes?

Wood shingles and shakes should be installed over solid or spaced plank sheathing.

What is the difference between a cedar shake and shingle?

Cedar shakes are split off while shingles are sawn smooth on both sides and cut tapered. Lastly, shakes are thicker than shingles. Durability – Generally speaking, cedar shakes are more durable and last longer than shingles because they are thicker and made from premium grade wood.

How far should cedar shingles overhang drip edge?

This first row of shingles should overhang the edge eaves and fascia by about 1 1/2” and about 1/2” over the edge of the roof to allow for proper drainage.

What is roofing sheathing?

Roof decking (or roof sheathing) is the wooden boards that make up the foundation of your entire roof system. I like to say foundation because it's what your shingles and the rest of your roofing components are installed on. Roof decking is one of the most important pieces of your roof system.

What do you put under wood siding?

Plywood is the most common type of wood used underneath the siding. Plywood is layers of wood cut on a large machine, pressed together under pressure and glued together to form a sheet of wood. Plywood is made from maple, pine, oak, cedar and poplar.

Can you use house wrap under shingles?

Housewrap, a common type of weather-resistive barrier (WRB), is installed between the cladding layer and the sheathing, while roofing underlayments go directly under shingles or other roofing material, forming a second line of defense against the elements.

What nails do I use for cedar shingles?

Correct Nails for Cedar Shingles

The ideal nail types for cedar shingle roofing projects include corrosion-resistant varieties like stainless steel and hot-dipped galvanized. At Cedar Roof Coatings, we advise against the use of plain steel nails to keep the cedar roofing stain-free over time.

What kind of wood goes under shingles?

It's essentially the foundation of the roof. This is typically made with OSB or oriented strand board or plywood that's attached with nails onto the rafters. Since it's made of wood, it will require general roof repair if there's a leak or water intrusion coming from the shingles.

Which side of cedar shingle faces out?

Are cedar shingles one sided, and if so, which side faces out? Cedar shingles have 2 (faces) sides and the best looking face is installed exposed to the weather. The face you like best is the one that should be installed exposed to the weather.

How much should cedar shingles overlap?

Cedar shingles should lap at least 18 cm (7 in.) over each side of valley flashing.

Should drip edge be tight to fascia?

A vertical drip edge lip extends down roughly 1 5/8" and as Steve points out, should not be set tight against the fascia board or water may run behind the gutter and down the fascia, inviting leaks and rot.

Does drip edge go over or under underlayment?

Does Drip Edge Go Over or Under Felt? According to most building codes and manufacturer recommendations, the drip edge should be installed beneath the underlayment along the eaves of the roof. But over the underlayment along the rake edges of the roof.

Is drip edge necessary?

Without a drip edge, water may end up beneath the shingles and may cause damage to various parts of the home. Though your home may not have originally had a drip edge installed, drip edges are now required by most building codes across North America to protect homes from damage.

How many years do cedar shakes last?

As long as it's properly installed and with proper maintenance, you can expect to get 30 years of life out of your cedar shake roof. If you invest in quality materials and live in an area with the right conditions, you could possibly get up to 50 years out of it.

Are cedar shingles expensive?

Cedar shingles and shake siding costs, on average, between $10.50 and $17.50 per sq. ft. installed. Quality of wood, size of boards, styling options and regional considerations all weigh in for why the range is what is noted.

Are cedar shingles more expensive?

Asphalt roof cost vs.

A cedar shake roof is a premium roof system, so it comes at a premium price. Because of its premium price, a cedar shake roof is going to cost more than a dimensional asphalt roof. You can actually expect to pay more than 3 to 4 times more for a cedar shake roof than the cost of an asphalt roof.

Do you gap cedar shingles?

The basic idea is that the shingles should be installed with 1/4- to 3/8-in spacing between neighbors; this gap is called a “key.” We're doing a 5-in exposure, which means the bottom 5 in of the the shingle will be visible, while the top 13 in will be under higher courses.

Can you walk on cedar shake roof?

So can you walk on a cedar shake roof? The short answer: yes.

Can you use roofing nails for cedar shakes?

The Cedar Shake & Shingle Bureau prefers the use of nails, however if you choose to use staples they must be stainless steel Type 316 in locations within fifteen (15) miles of salt water. For locations outside of the salt water zone stainless steel Type 304 or Type 316 must be used.

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