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Doors questions, answered by experts

Interior door thresholds are usually attached using finish nails, and some contractors will also use construction adhesive under the threshold to hold it in place. Exterior door thresholds are more commonly screwed to prevent them from pulling up when people step on the raised edge on the outside of the door. Exterior doors also include caulk sealant on the inside to prevent water and air from seeping through.

To achieve the correct opening size for a 30-inch door, add 2 inches to the door width and 2 ½ inches to the door height. For example, if you have a 30-inch-wide door with an 80-inch height, then the rough opening would measure 32 inches wide by 82 1/2 inches high

Security doors are not limited to standard sizes, and you can customize them to fit your needs and entryway dimensions. That's one of the fantastic things about security doors—they can be tailored to match your home. Keep in mind that a custom-sized security door will likely cost more than a standard size. 

You should prime interior doors before painting for the best results. If you do paint directly on the wood, you could see some of the grain patterns show through the paint, in which case you’d need to apply additional coats. Priming the surface before painting will reduce the number of coats and can better cover the grain pattern for a clean, finished look.

Minor modifications like grab bars and threshold ramps can be DIY, but professional services ensure compliance with ADA standards and structural safety.

The Unalaska, AK homeowners’ guide to door services

From average costs to expert advice, get all the answers you need to get your job done.