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Last update on May 31, 2026

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Avatar for Choice Home Warranty
Choice Home Warranty
4.0(
5,676
)

Serving Boulder, MT and surrounding areas

In business since 2008

Emergency services offered

Credit card accepted

"Had to file a claim for new clothes dryer, and repairs on fridge. Foothills Star Appliance came to look at both. Eric was the repairman. He was friendly, answered all my questions, and very professional. I would highly recommend his company."
Recommended by82%of homeowners
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Young Drywall
2.8(
2
)

Serving Boulder, MT and surrounding areas

In business since 2008

Free estimates

is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Recommended by100%of homeowners
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Drywall questions, answered by experts

Plaster ceilings can sag for several reasons. In some cases, the plaster and other building materials shift and come apart over time, which is why you’ll commonly find drooping plaster ceilings in older homes. Improper installation, foot traffic, and water damage—often from a leaky roof or a broken pipe—can also cause plaster ceilings to sag.

The amount of drywall you need for a 1,000-square-foot basement depends on the ceiling height, angles, number of doors and windows, and more. To find the wall square footage, multiply the width and height of each wall, minus any gaps from windows or doors, and add the totals together. You’ll also need enough drywood nails or screws to install the drywall correctly.

Plaster walls typically last between 30 and 70 years, but depending on the quality of the materials and the moisture levels in the building, they can last for over 100 years. With expert application and consistent maintenance, plaster can even last for centuries. To extend its lifespan, it is important to have the plaster professionally installed, address any water damage promptly, and repair small cracks as they appear. Regular inspections by a professional can help identify and address concerning cracks before they become significant issues.

Yes, you can apply new plaster over an existing plaster surface, such as a wall or ceiling, provided the old plaster is in good condition. Before you begin, check the stability of the existing plaster. The surface must be clean, free of loose material, and have no peeling paint. It is also recommended to roughen the surface slightly to promote adhesion. For older plaster, applying a base coat like a PVA emulsion or a specific bonding agent or primer is crucial. This step makes the existing plaster less porous and ensures the new and old layers adhere properly for a smooth, long-lasting finish.

According to the EPA, mold grows within 24 to 48 hours if left untreated after a water leak. So unless you notice the leak and stop it right away, you only have a day or so before mold is a real concern. If you don’t notice the leak, it can take about three weeks for the mold spores to become visible. That means you’ve likely had an active mold infection for a few weeks by the time you notice discoloration.

The Boulder, MT homeowners’ guide to drywall services

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

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