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Roofing installation
Discussing an integrated panel and tape system for roof and wall assemblies.

Creating a Secure Enclosure for the Cottage on the Cape

Learn how ZIP System’s integrated panel and tape system for roof and wall assemblies kept the This Old House Idea House on Cape Cod construction moving swiftly and efficiently—and how it will continue to help the home achieve higher efficiency and protection for years to come.

Installing roof flashing

How to Install Drip Edge and Step Flashing

In this video, General Contractor Tom Silva teaches three apprentices from our GenNEXT program his method for roofing a section of the house that will receive significant snow loads.

How to Build a Low-Maintenance Home

While there’s no such thing as a maintenance-free house, it is important to invest in the right materials that will go the distance for you and your home. Read our guide to the best materials to make your home a low maintenance one.

Easy-to-Install Roof Shingles

At the 2020 International Roofing Expo, GAF unveiled their Timberline® HDZ™ Shingle—and soon, you’ll see them up on the roof of the TOH TV Cape Ann Project House. Read on to find out how this revolutionary new architectural roofing shingle makes accurate nailing fast and easy.


GAF HDZ™ Shingles Engineered for Accuracy Installed at the Cape Ann Project House

This Old House’s Cape Ann Project requires more than 6,000 square feet of roofing. Watch as we demonstrate how GAF’s Timberline® HDZ™ roofing shingles provide LayerLock™ technology and a wider strike zone, allowing shingles to be installed 30% faster and more accurately than standard shingles.

Getting Algae Off My Roof

The black mold-like stains and streaks that appear on roofs, particularly light-colored asphalt shingles, is actually a blue-green algae.

Learn the Basics of Roof Systems

Roofs are considered one of the most critical components of your house. From materials and roof shape to problems and repairs, read this comprehensive guide to ensure yours is up to par.


How to Build a Copper Cupola Roof

Jason Senior of J&R Senior Sheetmetal Inc. illustrates how he forms copper panels for a standing seam roof


Westerly in Detail: Applied Rafter Tails

How do you apply rafter tails to the exterior of a structure after the walls have been sheathed? Home builder Jeff Sweenor developed a simple solution that's efficient to execute


Testing Drip Edge Installations on Roofing

Ask This Old House general contractor Tom Silva demonstrates the importance of a properly installed drip edge

Sneak Peek: Brookline Rubber Roof

A mid-century modern offers a lesson in replacing a flat roof

Building a Flat Roof Right

Here's how the pros construct one so it stays tight and tight

Read This Before You Redo Your Roof

Four out of five homeowners opt for asphalt shingles—here’s the lowdown on choosing the right ones for your own roof.

5 Safety Tips for Using an Extension Ladder


How to Treat and Prevent Ice Dams

Ask This Old House general contractor Tom Silva explains the best ways to keep your roof and gutters free from those dreaded ice dams


How to Install Ice-Melting Roof Cables

Master electrician for Ask This Old House Scott Caron helps a homeowner install heat cables on his roof to stop ice dams


How to Install Solar Panels

Renewable-energy expert Ross Trethewey demonstrates how photovoltaic solar panels work and the proper way to install them on a roof


How to Install a Copper Roof

This Old House experts install a standing-seam copper roof on a small addition


How to Patch a Leaking Rubber Roof

This Old House general contractor Tom Silva repairs a leaking flat roof with a new, long-lasting patch


How to Prevent Ice Dams

This Old House general contractor Tom Silva shows how to super-insulate an attic


How to Fix a Leaking Rooftop Vent Pipe

This Old House general contractor Tom Silva shows how to create a watertight seal around a vent pipe.

Photoshop Redo: Dressing Up a Cookie-Cutter Ranch

Facade improvements, including a new roof and porch, give a simple one-story house an elegant new look

12 Fall Fix-Ups That Pay You Back

Save yourself thousands in future repair, maintenance, and energy costs by not leaving these minor problems to get out of hand

Photoshop Redo: How to Update a Folk Victorian

A color update and period-style touches give an 1880s house even more charm


Preventing Roof Moss with Zinc Strips

In this video, This Old House general contractor Tom Silva shares tips for keeping a roof free of moss and mold

How to Make New Look Old

The homeowners, designers, and architect made mostly new construction on this 1830s farmhouse rehab look as if it had been there for nearly a century. Here's how

Fire-Resistant Roofing and Siding

Wrap your home's exterior with these naturally non-combustible and fabricated fire-resistant materials


How to Remove Roof Moss

In this how-to video, This Old House general contractor Tom Silva shares tips for keeping a roof free of moss and mold

Perfect Dormers at Winchester

At first glance the Winchester dormers look fine. But are they?

Walls (and Roof) That Won't Come Tumbling Down

The new construction at Carlisle consists of foam-core panels that are strong enough to stay put for a century, and solid enough to keep the fuel bills low.


The triangle formed by two sloping roof planes is a defining characteristic for a house. Take a look at some striking examples of the form these end walls can take.


These diminutive structures sit atop a roof ridge and bring light and air into a dark attic space. Check out a few cupolas that also bring style and interest to their top spots.