Deck builders in Barrington, IL

Homes in Barrington have a median construction year of 1982, so a deck original to a typical house would now be about 44 years old — beyond the point where wood framing, fasteners and flashing can be assumed sound.

Many decks from the 1970s and 1980s were built before today's detailed deck provisions appeared in model codes. Common issues on decks of this age include corroded hangers, posts set directly in soil and ledger boards fastened with nails. Replacement is often the better value than repeated repairs.

That makes Barrington's housing 21 years newer than Cook County as a whole, where the median home was built in 1961. Statewide, the median Illinois home was built in 1971. Among the 102 covered Illinois communities with Census data, Barrington ranks #78 for oldest housing. In this ZIP code, 15% of homes were built before 1960, 31% between 1960 and 1979, 34% between 1980 and 1999, and 21% since 2000 — the single largest group dates to the 1980s.

The nearest NOAA climate station with 1991–2020 normals is Barrington 3sw, about 2 miles away. It records an average of 137 days a year with a low at or below 32°F — a substantial freezing season. On roughly 83 of those days the temperature climbs back above freezing, so water in wood, soil and gaps between boards repeatedly freezes and thaws.

For Barrington, that means footings must bear below the locally required frost depth to avoid heaving, and wood surfaces should be kept sealed so absorbed water doesn't split boards over winter. Synthetic decking tolerates freeze-thaw well but still needs the manufacturer's expansion gaps.

Average snowfall near Barrington is about 38.5 inches a year (Barrington 3sw). That's enough that shoveling and ice-melt choices affect deck surfaces, and stair treads benefit from good texture and drainage.

Barrington sees about 40.4 inches of precipitation a year, with measurable rain or snow (0.1 inch or more) on about 76 days. Good drainage between boards, clean gaps and a ledger that is properly flashed keep that water from rotting the frame.

Summer heat is mild by comparison — average summer highs near 79°F and only about 6 days a year at 90°F or above — so board color can be chosen mostly on looks.

Budget, upkeep tolerance and sun exposure on your particular lot still decide the final choice between these options.

Barrington has about 17,341 housing units across its covered ZIP code. 79% are single-family detached homes, 8% are attached homes such as townhouses and rowhouses, and about 13% are in buildings with two or more units. Roughly 87% of occupied homes are owner-occupied.

Detached single-family homes dominate in Barrington, so most decks are backyard decks attached to the rear of the house. That gives more freedom on size, layout and stairs, and makes a well-planned deck one of the most-used rooms of the home.

• Replacement and major repair: about 9,006 homes (52%) were built between 1970 and 1999, the age group whose original or early add-on decks are most likely to have worn-out framing, connectors and boards.
• Retrofit decks on older homes: about 4,718 homes (27%) predate 1970. Here the priority is confirming that add-on decks are properly attached — or rebuilding them freestanding — before any cosmetic work.
• Upgrades and expansions: about 1,057 homes (6%) were built since 2010. Their decks are usually sound but small or builder-grade, so enlarging the deck, adding stairs and switching to composite or upgraded railings are common.

Barrington has a defined building season. Spring and early fall offer the most comfortable working weather; winter is a good time to settle the design and apply for permits. Stains and sealers generally need dry weather and moderate temperatures, so plan wood finishing for late spring or early fall.

For Barrington, IL, ask the permit office whether your deck needs a permit based on its size, height and attachment to the house, which drawings and inspections are required. Statewide code background for Illinois is on our state page; local rules change, so the building department remains the authority.

The closest covered area is Hoffman Estates, about 6.4 miles from the center of Barrington's covered ZIPs. Its median home was built in 1976, 6 years earlier than in Barrington. Barrington has 19 percentage points more detached single-family homes (79% vs. 60%), which changes how many projects are backyard decks versus compact townhouse decks. Owner-occupancy is 87% in Barrington compared with 74% in Hoffman Estates. Barrington's covered ZIP code span about 74.1 square miles of land with roughly 17,341 homes — about 234 per square mile, a low density that usually allows larger decks and freestanding designs.