This Old House general contractor Tom Silva shows how to upgrade an entryway with a brand-new, low-maintenance, energy-efficient door. (See below for a shopping list and tools.)

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Tom and Kevin replaced an old, wooden exterior door with a new fiberglass door. Because the old door had thin wood panels and poor weatherstripping, it was not energy efficient. The new fiberglass door had foam insulation inside and dual-pane insulated windows. With the trim removed, Tom used a reciprocating saw and a pry bar to cut the nails holding the jambs in place and removed the entire door unit. The new pre-hung door would rest on the subfloor, which was not level. To correct this problem, Tom scribed two wood strips and attached them to the top of the subfloor. These strips also elevated the new threshold so that when the door is opened, it will clear any rugs or carpet that might be in the way. Next, Tom installed a flexible "self-sealing" flashing over the front edge of the opening and applied a generous bead of caulking to protect the underside of the door from any water penetration. With the flashing in place, Tom and Kevin inserted the new door into the opening, checked the jambs for plumb, inserted shims and screwed the unit in place. Next, Tom and Kevin installed a lockset and used minimal-expanding foam insulation between the jambs and framing to seal out drafts.

Shopping List for Installing a Fiberglass Entry Door:
- pre-hung fiberglass entry door [[ Ссылка ]]
- 2x4 [[ Ссылка ]] and shims [[ Ссылка ]]
- 6d nails [[ Ссылка ]]
- adhesive-backed waterproof membrane [[ Ссылка ]]
- silicone adhesive [[ Ссылка ]]
- 1x4 [[ Ссылка ]], used as cleats when installing new door
- 3-inch long weather-resistant screws [[ Ссылка ]]
- minimal-expanding spray foam [[ Ссылка ]]

Tools for Installing a Fiberglass Entry Door:
- reciprocating saw [[ Ссылка ]]
- pry bar [[ Ссылка ]]
- 24-inch [[ Ссылка ]] and 48-inch [[ Ссылка ] levels
- scribe [[ Ссылка ]]
- circular saw [[ Ссылка ]]
- caulk gun [[ Ссылка ]]
- drill/driver [[ Ссылка ]]

Tom and Kevin installed an insulated, fiberglass door manufactured by Therma-Tru [[ Ссылка ]].

Tom and Kevin also installed a new lockset manufactured by Schlage Lock Company [[ Ссылка ]].

About Ask This Old House TV:
Homeowners have a virtual truckload of questions for us on smaller projects, and we're ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.

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How to Install a Fiberglass Entry Door | This Old House
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