With closed cell foam on the rim joist, the wooden band between floor frame and concrete stops leaking air. It takes one day and makes a big difference to basement comfort.
We seal rim joists in houses all over Waterloo. Rim joist work is fully insured like every job, and the foam depth gets checked in each joist bay before we move on.
The rim joist rests on the concrete. The gap between the wood and the concrete, plus every pipe and wire that goes through it, lets outside air straight into the basement.
In most older Waterloo houses there is only a loose batt pushed into each bay. Air moves right around it, and you can feel the draft on a windy day.
Closed cell foam is sprayed into each bay between the floor joists. About two to three inches seals the wood and the concrete joint airtight and stops moisture from forming on the cold wood.
Batts and rigid board cut to fit leave edges that leak air. Foam bonds to every surface, so there is nothing left to leak.
The rim joist and the basement walls are often done together. If the walls are open, sealing both in the same visit saves a second setup. The basement wall page covers the other half of that job.
Rim joist pricing follows the basement's perimeter and the count of bays. A typical house runs from about $1,500 to $3,000, depending on size and access.
You can often spot a leaking rim joist without tools. Cobwebs that move in the breeze, frost on the nails in January and a cold strip of floor along the outside walls upstairs are all common signs. Dark stains on the wood or a damp smell in summer point to the same spot.
Rim joist spray foam insulation fixes all of those at once. It seals the air, warms the wood and keeps summer moisture from collecting on it.
In a basement bedroom, the rim joist sits just above the head of the bed. A draft there is the first thing a tenant notices. Rim joist spray foam insulation is one of the cheapest upgrades a Waterloo landlord can make, and it takes one day between tenants.
Every pipe, cable and dryer vent that passes through the rim joist leaves a gap around it. Those gaps let in cold air and give mice an easy way inside. The foam fills around each one, and we leave room at the dryer vent and gas line so they can still be serviced.
We also keep the foam clear of the furnace flue and any wiring that has to stay visible for the electrician.
Phone (226) 407-7718 and a free visit leads to a written price for rim joist spray foam insulation. All of our spray foam insulation services are listed on the home page.
Pairing two of these in one trip means the rig only sets up once.
Attic spray foam insulation is how we keep warm air from rising out of upstairs rooms, by sealing across the attic floor or coating the roof boards from below. It is the quickest way to cut ice dams and cold upstairs bedrooms.
View Attic Insulation
Basement spray foam insulation grips the concrete itself, so humid air never touches the cold wall. It keeps the room warmer in winter and stops the damp smell in summer.
View Basement Insulation
Closed cell spray foam sets hard and blocks moisture, while open cell foam is soft and costs less per inch. Putting each in the right place gets the most value from the job.
View Closed Cell And Open Cell Foam
Wall spray foam insulation packs the stud cavity from side to side, so there are no gaps for cold air to move through. It is the best way to insulate an outside wall when you have the drywall or plaster off.
View Wall Insulation
New home spray foam insulation wraps a new build's walls, rim joists and roof in one step. It helps builders reach the tighter energy and air leakage targets in the current Ontario code.
View New Home Insulation
Garage spray foam insulation lets you work in the garage all winter and takes the chill off the bedroom over it. It seals the walls and ceiling against cold air and moisture in one step.
View Garage Insulation
Commercial spray foam insulation seals the roof, walls and slab edges of a business building in one step. It keeps work space at a steady temperature and cuts heating and cooling costs.
View Commercial InsulationSend a ballpark size and what the space is for, and we phone back to set up the free visit.
Once the form arrives, we phone you to settle on a visit time. Calls go to +1 (226) 407-7718.
