FAQs About Home Construction
and Upgrades in Farmington, ME
Tanner Homes Construction Answers the Most Common Home Service Questions
Clients often have questions about their options for home improvements. Tanner Homes Construction in Farmington, ME believes in communication. That provides clear answers on project timelines, cost, warranty details, and the steps involved for every service. We ensure clients understand their choices before work begins, whether planning a remodel or considering an energy efficiency upgrade. Our team explains processes in detail and remains available for ongoing communication throughout your partnership with us.
Frequently Asked Home Improvement Questions in Farmington, ME
Many Farmington, ME homeowners ask about the benefits of insulation or guidance for choosing a heat pump. Tanner Homes Construction explains the certifications, warranties, and Efficiency Maine rebates available for local projects. We detail steps for weatherizing your house, set clear expectations about project durations, and lead you through available financing incentives. Our advice helps you optimize both comfort and budget for your property.
Frequently Asked Questions
Maine experiences severe winters with sub-zero temperatures and heavy heating demands, as well as humid summers. Spray foam – especially closed-cell foam – acts as both a superior insulator and a powerful air barrier. By stopping drafted and reducing thermal bridging, it keeps Maine homes significantly warmer in the winter and lowers heating Bills, which are a major household expense in northern New England.
Closed cell-foam is generally recommended for most exterior applications in Maine because it has a higher R-value per inch (around R-6 to R-7) and cats as a moisture/vapor barrier. This is critical in Maine to prevent warm indoor air from hitting cold framing and creating condensation. Open-cell foam is lighter and more affordable, making it great for interior sound-dampening or vented roof assemblies, provided a separate vapor retarder is used when building codes require it.
Closed-cell spray foam is moisture-resistant and waterproof. In Maine, where ice dams, heavy snow loads, and spring thaws are common, closed-cell foam prevents moisture from penetrating exterior walls and roof decks. This significantly reduces the risk of wood rot, structural damage, and mold growth compared to traditional fiberglass batts that can absorb moisture and sag.
Yes, ice dams typically form when heat escapes from a poor insulated or poorly sealed attic, melting the snow on the roof, which then refreezes at the cold eaves. Applying closed cell spray foam directly to the underside of the roof deck (creating an unvented, conditioned attic) keeps the roof deck cold and uniform in temperature, stopping the melting-and-refreezing cycle that causes ice dams.
Maine’s Uniform Building and Energy Code (MUBEC) adopts model energy codes that dictate strict R-Value minimums depending on the climate zone (Zones 6 and 7 in northern/downeast Maine versus Zone 5 in Southern Maine). For example, cathedral ceilings and exterior walls require high R-Values (Often R-20 to R-30+ for walls and R-49 to R-60 for ceilings). Because closed-cell foam packs a high R-value into a smaller thickness, it helps builders meet these strict codes in tight spaces.
Generally, no. In Maine’s climate zones, closed-cell polyurethane foam applied at a thickness of two inches or more acts as its own Class II vapor retarder. This satisfies building code requirements for most walls and roof decks without needing an additional layer of polyethylene sheeting, simplifying the construction process.
Older Maine homes (like Victorians, colonials, or antique capes) are notoriously drafty and often lack standard framing cavities. Low-expansion spray foam or injection foam is frequently used to retrofit historic drafty walls, rim joists, and basements without altering the home’s historic exterior siding or interior plaster, dramatically improving comfort while preserving the structure.
Prices vary based on labor rates, accessibility, and the size of the project, but generally, open-cell foam costs between $1 and $1.50 per square foot, while closed-cell foam rangers from $2-$3+ per square foot, for standard thicknesses. While upfront costs are higher than fiberglass, Maine homeowners typically see a return on investment within a few years due to steep reductions in heating oil or propane usage.
It is challenging. Professional spray foam chemicals require specific ambient and substrate temperatures (usually 50°F to 60°F depending on the manufacturer) to cure and expanded properly. Spraying onto freezing framing lumber in the middle of a Miane winter can cause poor adhesion and chemical failure. Professional contractors will typically heat the work area or schedule exterior/unheated envelope applications for late spring, summer or early fall.
No, spray foam has no nutritional value, so pests like mice do not eat it. However, mice can occasionally chew through soft materials to make a nest. Because closed-cell foam cures hard and dense, it acts as an excellent physical barrier that seals off entry points (like utility penetrations and sill boxes) better than fiberglass, keeping mice, ants and other Maine wildlife from finding their way indoors.