A Full Guide to DIY Roof Installation: How to Roof a House

Jun 25, 2025 | Roofing

DIY Roof Installation - FRSrooof

If you’re planning for DIY roof installation, then it’s a great choice and adventurous task to give your home a look you want. However, before roof installation you should know how it works. Let us examine the complete procedure step-by-step guide to understand how DIY roofing installation services work.

What Is Required to Replace Your Home’s Roof?

You can save thousands of dollars on labour charges by installing a roof yourself. However, the material prices are high and cover a lot more than just shingles. You’ll need a number of tools and safety gear.

Obtaining Permits

Roofing installations are often required to obtain permits. You could require a building permit from your county or city, depending on where you live. 

Roofing Material and Tools

A fairly precise collection of tools is needed for roofing. To cut and secure the roofing materials in place, you’ll need the appropriate tools. Collect the following materials and tools before starting to install a new roof. 

Tools for DIY roof installationRoofing Material
A fall arrest system and safety harnessThe underlayment
Staples and caulk gunsStaples for Sealant
A nailer for roofingSealant for roofing nails
Gloves for workShingles of asphalt
Air compressor and air hoseFlashing on the drip edge for valleys,
Straightedge snippets of tinBlades of hooks
Blades and a utility knifeVents and dormers

A Complete Roofing Process Step By Step Guide

insatallaion of roof

Step 1: Remove the old shingles

Before starting DIY roof fitting, clear the nearby area to prevent any mishap. Now get rid of old shingles and old nails. The most efficient strategy is to use a tear-off shovel for shingle removal and a pry bar to pry off the ridge cap shingles. To work smart, place a dumper near your roof to dispose  of  the old material.

Step 2: Add new vent holes and fix the decking

Any decking that exhibits rot or water damage should be replaced. This step can be skipped if your existing roof is not too old, however, in older roofs step 2 is crucial. Make sure the circular saw’s blade depth is slightly greater than the decking’s thickness to avoid cutting into a joist. Next, trim each damaged region into a rectangle. If you plan to install any more vents or skylights, now is the perfect time to cut the openings.

Step 3: Place a drip edge on the eaves.

Fasten the drip edge that covers the fascia of the eaves. The fascia is probably not perfectly straight, so don’t tear a line. Rather, firmly grasp the drip edge against the fascia and fasten it across the highest point into the decking using roofing nails. Secure it for each set of feet with 1-1/4-inch roofing nails, then trim it to the proper length with tin snips.

Step 4: Install Stick on ice barrier

Now the next step in the process of installing the roof is placing the ice barriers. Where necessary, add self-stick underlayment during your roof installation. It stops water penetration from seeping through nail holes and protects the area around nails.

Step 5: Lay felt paper for roofing

Apply roofing felt paper on the roof. Felt paper can be placed on the ice-barrier sheet or placed directly on the decking. In this method, lightweight paper weighing 15 to 30 pounds is typically employed.

Step 6: Put in place valley flashing

While the gaps between the sloping sections are especially vulnerable to leaks, metal valley flashing is required to protect complicated roofs with several peaks. There are some steps you should follow before installing your roof.

  • After cutting the self-stick underlayment to size, Remove the plastic backing and then apply it carefully. Now fold the underlayment in on itself, sticky side out. Then unfold it and set it down in the valley.
  • Cover the self-stick underlayment with felt paper.
  • Put the flashing in place. Install the flashing. Use tin snips and cut the bottom edge flush. 

Step 7: Install vents

Now it’s time to install necessary vents. These commonly flash on their own. After positioning the vent or skylight over the entrance and fastening it with nails pierced through the flashing, seal it properly.  

Step 8: Install the shingles

Before starting installing shingles, add a layer of underlayment around vent pipes and fix it with roof sealant. Now start shingle installation at the roof. Follow the manufacturer’s nailing instructions or get advice from professional roofing installation services. This process is important as insufficient nails lead to roof failure during storms.

When you reach towards the vent, drive nails through the flashing and into the decking after sliding the bottom shingles. Every nail head should be sealed. Now cut the shingles as required.

Step 9: Cover the ridge

When you get to the ridge, apply the same technique as you did during felt paper installation. Wrap the 1st and 2nd side over the top respectively. Bring a utility knife with hook blades to the appropriate size of shingles. Your DIY new roof installation is almost complete.

Step 10: Install flashing for the steps and dormers

Apply self-stick underlayment to the walls minimum half foot above the ground. Check if water smoothly passes the flashing, it means your  roof has an extra water-proof layer. 

Step 11: Seal it Up

Now in the last stage expert roofing assembling seal the edges in following way;

Seal it up by caulking all of the exposed vent and stack flashing nails. Seal the areas carefully where rubber connected to the pipes.

Ask for Expert Assistance

Roof installation DIY idea is a great and interesting task but in case of safety concerns and confusion about How to install roof you can always ask for roofing experts. The FRS roofing team is always there to assist you in Massachusetts by offering one of the best roofing installation services. Feel free to contact us or visit our FRS Roofing website for more roofing DIY information.