Small borough near Red Lion
Spray Foam Insulation in Dallastown, PA
A third of Dallastown homes predate 1940, and more than half of homes are rented.
- Free on-site estimates
- Written quote listing material, thickness and R-value for each area
- Party walls, rim joists and old wiring checked before we price
Insulating Dallastown Homes
Spray Foam Insulation in Dallastown covers an old borough with many rentals. Point2Homes' census summary shows 33.6% of homes built in 1939 or earlier and 16% in the 1970s, with 54.9% of occupied homes rented and 42.5% detached.
Settled 1736
Dallastown was settled in 1736 and incorporated as a borough in April 1866. It covers 0.8 square miles, and Wikipedia counts 1,780 housing units in 2020, 5.2% vacant.
What we see
Older attached homes need roof spaces and rim joists insulated. Apartments and duplexes need hatches and attics sealed. 1970s houses need the attic topped up and the rim foamed.
For landlords
Insulating between tenants is easiest, and lower heating bills mean fewer complaints.
Code and climate
Dallastown is in York County's Climate Zone 4A. Pennsylvania's code lists R-49 for ceilings, and ENERGY STAR recommends R-60 for an uninsulated existing attic or adding R-49 over 3 to 4 inches. Older borough homes are often far below that. Winters bring January lows near 21F and about 25 inches of snow, measured at York, so heat loss through a thin attic and bare rim adds up. Sealing those two areas usually gives the biggest gain.
Older attached homes
Dallastown's oldest homes are attached and semi-attached houses close to the street, many converted to apartments. Their roof spaces are often shallow and reached through a small hatch, and their basements have stone or brick foundations with bare rim joists at the front and back. We blow insulation into the roof space after sealing, and spray closed-cell foam on the exposed rims. Frame side walls on end units and twins can be dense-packed after a wiring check. Each of those is its own line on the quote, so owners and landlords can phase the work.
Call (717) 864-6430 or get a free estimate for a visit and written price.
Dallastown Facts
- Housing age. 33.6% of homes built in 1939 or earlier; 16% in the 1970s (Point2Homes, census ACS).
- Rentals. 54.9% of Dallastown's 1,605 occupied homes are rented (Point2Homes).
- History. Settled in 1736 and incorporated as a borough in April 1866 (Wikipedia).
- Housing count. 1,780 housing units in 2020, 5.2% vacant (Wikipedia).

Dallastown Questions
Do you insulate apartments in Dallastown?
Yes, ideally between tenants.
What does a 1970s Dallastown home need?
Usually attic sealing and depth plus rim joist foam.
What attic R-value should I aim for?
ENERGY STAR suggests R-60 for an uninsulated attic or adding R-49 over 3 to 4 inches.
Can you dense-pack the side wall of a twin?
Usually, if it is frame and the wiring checks out.
Free Estimates in Dallastown, PA
Free written estimates in Dallastown.
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