Do I need ice and water shield on my roof?

It's crucial to have ice and water shield installed on/around certain areas of your roof, like roof valleys, around penetrations, and on roofs that have a 2/12, 3/12, or 4/12 pitch. Because of its importance, every roof needs to have it. There's also a code if you live in an area above the snow line in the US.

Should I put ice and water shield on my entire roof?

Should you get ice and water shield installed? You can (and should, in my opinion) insist on installing ice & water shielding throughout your entire roof, especially if you know your home is prone to ice dam leaks. Just be prepared for push-back from your roofer.

How much ice and water shield do I need on my roof?

The minimum is typically 2 feet (24 inches or 0.60 m) above the vertical projection of the inside of the exterior wall. In colder regions, a good practice is to cover the first 3 feet (36 inches or 0.91 m) of roof over heated space with ice and water protector. All overhangs should also be covered.

Is ice and water shield required by code in Ontario?

The Ontario Building Code specifies there must be a minimum three feet of Ice & Water at the eave. If you have more than a 2′ overhang you should have a 2nd row of Ice & Water Shield, meaning 6′.

Can ice and water shield be removed?

Tips for separating shingles from ice shield

Sometimes shingles come off the ice shield better when it is hot. In that case, let the area heat up a bit and then tear that area off, and then the shingles will separate from the ice shield. Sometimes shingles just won't come up at all.

Why Every Roof Needs Ice And Water Shield | Peel and Stick Underlayment

How long does Ice and Water Shield last?

The original, fully-adhered roofing underlayment, Grace Ice & Water Shield®, now has an extended exposure limit of 90 days. For more than 35 years, Grace Ice & Water Shield® has been the brand that roofing contractors and architects trust most to specify and install on marquee projects around the world.

Can you put ice and water shield over old shingles?

Don't put Ice & Water Shield over old shingles - Deseret News.

Is roof underlayment necessary?

All roofs have underlayment. At a minimum, a roof with asphalt shingles should be completely covered with one layer of underlayment. Roofers may consider adding layers of underlayment for superior protection, which is especially useful on low-pitch roofs.

Where is eave protection not required Ontario?

Eave protection is not required over unheated garages, carports and porches, where the roof overhang exceeds 900 mm (36 in) measured along the roof slope from the edge of the roof to the inner face of the exterior wall, on roofs with slopes of 1 in 1.5 (8/12) or greater.

Do roofers need to be licensed in Ontario?

Roofing contractors are not licensed by the government but, with a little research, you can find a reliable roofing contractor. Start by: asking friends and family for recommendations. considering local businesses only, so you can more easily check their references.

Do you nail ice and water shield?

Rolls of the ice shields come in three foot rolls with a total of 66 lineal feet. Cut the length of the sheet to fit the roof. Pull off the protective backing and press the Shield into the roof sheeting for the adhesive to take effect. Do not staple or nail the shield unless it is absolutely needed.

When should ice and water shield be installed?

Who needs to have ice and water shields? In the northern part of the United States where the average temperature in January is 25 degrees or lower, most building codes require protection against ice dams.

Does drip edge go over or under ice and water shield?

The best way is to install the roof drip edge only along the eaves first, then place ice-and-water barrier (in the snowbelt) or felt paper (underlayment) over the drip edge. This lets any water that gets on the roof run down the underlayment and over the drip edge.

Do you need underlayment with ice and water shield?

In some areas, ice and water shielding may be required. But even if it isn't required, in most areas, this type of underlayment is often still a wise choice because it serves as an added layer of protection against moisture. In particular, these underlayments are a good choice in areas that experience severe weather.

Are H clips required for roof sheathing in Ontario?

For the most common roof sheathing in our area, which is 1/2” nominal (7/16” actual) sheathing over trusses or rafters at 24” on center, there is no requirement for H-clips.

What is the minimum roof overhang?

There is no true standard size for overhangs, but typical overhangs that are used for protection from rainfall are 16-18 inches wide. Overhangs wanted for shading should be minimally 24 inches.

Are Eavestroughs mandatory in Ontario?

The Ontario Building Code | Required Eave Protection

(1) Except as provided in Sentence (2), eave protection shall be provided on shingle, shake or tile roofs, extending from the edge of the roof a minimum of 900 mm up the roof slope to a line not less than 300 mm inside the inner face of the exterior wall.

What do roofers put under shingles?

Answer: Roofing felt is a layer of tar paper installed beneath the shingles to provide a backup waterproof membrane in case of leakage. Felt, otherwise known as underpayment, is required when asphalt shingles are installed as a first layer of roofing or when they are applied over wood shingles or a built-up roof.

How many layers of roof underlayment do I need?

Two layers of underlayment are required for low-slope roofs. The first course is doubled. Above that, 36-inch wide strips are then applied to the roof in a shingle fashion, starting at the lower roof edge, and overlapping subsequent courses a minimum of 19 inches.

Can you double ice and water shield?

“In parts of the country where severe ice dams and wind- driven rain can cause leaks, use two layers of Grace Ice & Water Shield around the eaves – one directly on top of the other with the flashing or perimeter metal in between the two membrane layers.”

How much does ice and water shield cost?

Granular or sand ice and water shield starts at $50.00 per row of material, 3 feet by 33 feet. Smooth ice and water shield costs around $100.00 per square (100 square feet of roof area) to go under a low slope roof. High heat ice and water shield will be a little more expensive and costs around $125.00 per square.

Where should ice and water shield be installed?