Estimating Spray Foam Coverage

Coverage Calculator

Estimating spray foam insulation coverage is easy with our calculator. Simply enter your desired final R-Value, height of the ceiling and the length of each wall and the calculator will recommend the number and size of kits you need.

Additional and In-Depth Info for Estimating spray foam insulation coverage:

Below are overviews of the potential applications for each of our product formulas. Please read the entire section for the product you are considering. Gaining a general overview of the strengths, limitations and ideal uses for each type of spray foam insulation will help you choose the correct product and quantity for your application.

Standard to Metric conversion chart for estimating product coverage.

Tiger Foam™ Slow Rise Formula

When to use and how to calculate coverage for our Slow Rise Formula.

This product is intended for closed wall cavities such as framed houses and structures where the walls are intact with no pre-existing insulation.

Tiger Foam™ Slow Rise (SR) formula is low‐expansion foam. It is designed to expand slowly, filling existing plastered or drywall covered walls completely, without the risk of creating too much pressure and damaging the walls. This product is especially suited to insulating homes that were built without insulation in the outside walls or as a soundproofing for common walls in condominiums, apartments, and to isolate family rooms, bathrooms, laundry rooms from excess noise.

Common uses:

• The common wall between apartments and condos for sound control.
• Soundproofing offices and conference rooms.
• The common wall between an unheated garage and the main house for thermal insulation. (Also good for soundproofing if it sounds like someone is landing a 747 in your kitchen every time someone pulls the car into the garage!)
• To insulate outside walls on older homes that lack insulation in the exterior walls.
• Boat hulls, pontoons and flotation devices. The Slow Rise product is approved as flotation foam by the U.S. Coast Guard.
• Anywhere injected foam can be used.

Calculating coverage for the Tiger Foam™ Slow Rise Formula:

• Measure Length x Height of the wall to be filled
• Subtract the square feet of doors and windows in that wall
• Subtract 6% for the studs (which you won’t be spraying)
• Take that total and multiply by 3.5″ for a 2″x 4″ wall, or 5.5″ if it is a 2″x 6″ wall
• The result is the number of board feet you need to install to complete your project.

Example:

• 10′ long x 8′ tall wall is 80 square feet
• It has one door 3′ x 7′ (21 sq. ft.) and 2 windows 2.5′ x 3′ x 2 (15 sq. ft.). for a total of 36 sq. ft.
• Take the 80 sq. ft. and subtract the 36 sq. ft. and you are left with 44 sq. ft.
• Take the 44 sq. ft. and subtract 6% (44 x .06 = 2.64) which is rounded to 2.6 sq. ft. and you are left with 41.4 sq. ft.
• The 2″x 4″ cavity is really 3.5″ deep. You multiply 41.4 x 3.5 = 149.9 board feet to insulate.
• You would need to order a 200SR kit to insulate this wall

The price of the kits are less expensive the more you buy. A 600 board foot kit is almost the same price as 2 of the 200s, so buying a large 600 kit is 30% free product over buying 2 of the 200 bd. ft. kits.

A simple way to figure how much you will need of the Slow Rise Foam is that the TF600SR kit will cover approximately 148sqft of wall at a 3.5″ stud depth. If the wall is a 4″ depth the kits will cover approximately 129sqft of wall and if a 5.5″ wall approximately 94sqft.

Pontoons:
Your average 16 foot pontoon set requires a 600SR and a 200SR to fill both pontoons. The calculation for filling a cylinder is:

• π x r2 x L
• 3.14 = π (pi)
• r2 (r = radius, which is half the diameter) r2 means the radius is squared (you multiply the radius by itself)
• L = length of the pontoon

Example:
The pontoon is 18″ in diameter and 16ft long

• π x r2 x L
• The radius is 9″ or.75′ .75 x .75 = 0.5625
• 3.14 x 0.5625 = 1.76625
• 1.76625 x 16′ = 28.26 x2(for both pontoons) = 56.52 cubic feet in both pontoons.
• One TF600SR (43 cubic feet) and one TF200FR (13 cubic feet) will do the application

Filling Tanks
Slow Rise foam can be used to fill buried gas and oil tanks, flotation devices, etc. To convert gallons to cubic feet, multiply gallons X 0.1337 i.e. a 400 gallon tank would be 400 x 0.1337 = 53.48 cu. ft. to fill this tank (or very close to it) you would need to use the Slow Rise (SR) formula. A TF600SR will Fill 43 cu. ft. and a TF200SR 13 cubic feet for a total of 56 cu. ft. yield, you would have a bit left over.

55 gallon drums commonly used to make floating platforms requires 7.53 cu. ft. of foam to fill.
A TF600SR kit is 43 cubic feet, and will fill 5.5 ‐ 55 gallon drums
A TF200SR kit is 13 cubic feet, and will fill 1.7 ‐ 55‐gallon drums
For different size drums or tanks: 1 gallon = approximately 0.1337 cubic feet.

Installation of the Slow Rise Foam:
The installation of the Slow Rise foam is done on a timed basis. Speak with our Sales or Technical Teams to help figure out how to approach your specific application.

Tiger Foam™ Fast Rise Formula

When to use and how to calculate coverage for our Fast Rise Formula.

This product is intended for open wall cavities and new construction (before the installation of plaster or drywall) and remodeling projects where existing plaster or drywall has been removed.

Figuring how much you need depends on your application. Let’s take a common application where you are either building a new house, or have stripped the drywall or plaster and lathe off the walls in a remodel job. Commonly, you will want to apply 1″ of foam to the interior of the outside walls and add a batt to fill in the rest of the cavity. You can also solely use the foam to achieve the desired R value.

Calculating how much you need:

• Measure your outside walls length x height to get your raw square feet of wall area
• Measure the doors and windows and get the total square feet of door and window area
• Subtract window and door area from the total wall area
• Subtract 10% from this figure to account for stud space

Example:
A house that measures 40’x 20′ with 8′ walls:

• 40L + 20W x 2 = 120 x 8′ = 960 total square feet of wall area in the outside walls
• You have 120 square feet of windows and doors area
• 960‐120= 840 square feet of wall
• Subtract 6% (for stud space) of 840, which is rounded to 50 sq. ft. 840‐50=790 square feet of wall area
• You have a total of 790 square feet of wall area to foam
• This job would require one TF600FR kit and one TF200FR kit for a 1″ application

Crawl spaces
Crawl spaces and basement ceilings, including rim joists are calculated at simple board footage. For instance, if your crawlspace is 20’x 30′, that equals 600 sq. ft. One TF600FR kit will do that job and you’ll have warm floors and less or no draftiness from air infiltration coming up the walls from the crawlspace or basement.

Metal buildings
Metal buildings are figured on gross sq. footage of wall and ceilings or roof.

Example:
A 20 x 30 metal building with 10 foot walls:

• 30L + 20W x 2 = 100 x 10′ wall height = 1000 total square feet of wall area
• You have 145 square feet of window and door area
• 1000 – 145 = 855 square feet of wall
• The gable is 2′ above the wall to the peak 2′ x 20 = 40 square feet of gable. This gets added to the wall square feet. 855 + 40 = 895
• The roof is 11′ x 30′ x 2 = 660 square feet of roof area
• 895 + 660 = 1555 square feet
• Add 10% to account for the corrugations in the metal.
• 1555 x .10 = 155.5 555 + 155.5 = 1710.5 total square feet
• Three of the TF600FR kits will suffice for the application

Spas and Hot Tubs
Fast Rise Foam should be applied directly to the hot tub and plumbing, usually with a 3″ thick application.’

A note on Tiger Foam™ tank temperature

If it is below 65 degrees outside where you live, you really need to warm Tiger Foam™ tanks to get their full yield. Maximum yield is achieved when tanks are between 75 and 85 degrees. A ceramic heater or electric heater with a fan works well. The closer they are to the ideal temperature, the better the yield. If you don’t keep the tanks warm, you will not get the yield out of the kits and will run out of foam. If you are doing a large project, it would pay to invest in a infrared thermometer for $50 at Sears or Home Depot. If a TF600 gets below 60 degrees, you can lose 30% of the yield, so the thermometer would be a good investment. If the tank temperature gets below 55 degrees F, the foam doesn’t expand and will run.

We recommend that you leave them in the house or a heated space. Many folks don’t realize that if its cold weather and you keep your house temperature at 68 to 70 degrees F, then the tank temperature is only going to be about 61 degrees if you set it on the floor in the house. BEST BET: Put a heat source on these kits before you use them and remember they need to be warm to the touch to get the full yield. In the summer, put them in the sun for a couple of hours then rock the tanks for a couple minutes or so to distribute the propellant and the heat evenly. This foam expands and adheres great within its proscribed temperature ranges. KEY WORDS: TANKS WARM TO THE TOUCH! Pre‐warm the kits 1‐2 days prior to your application to ensure the core temperature of the tanks are within range. They also take time to cool down. You don’t have to keep heat on them while you are spraying. Just get them warm before you start. Unless it’s below 20 degrees outside, they won’t cool down in the time it takes to spray a kit. A little common sense when using these kits really makes them work well.

Never apply a heat source directly to the tanks. Do not subject them to an open flame. Never use a blowtorch to warm the tanks up! (Sorry, that was a real question called into us, so we thought we’d address it before it was asked again).

These kits are a dream to use in the summer, but they do take special attention to tank temperatures in the winter months. We appreciate you taking the time to understand this.