Need price of flat roof? Calculate the cost to install a new IB Flat Roof

This Free Roofing Price Calculator is designed to give you a rough idea of how much it is going to cost to install a new flat roof or to replace an existing one. It will also calculate approximate energy savings derived from installing white* (most energy efficient) IB membrane vs. black rubber (EPDM) or Tar & Gravel/BUR roof.

Your actual installation cost may vary based on the specifics of your roof and your roof difficulty. Also, the price for Tar and Epdm roof material greatly depends on the price of OIL, which is now trading at over $130 per barrel - it's all time historic highs. Since we DO NOT install Epdm or Tar roofs, we provide you with our estimated cost, based on our experience. Epdm and Tar roof prices also very from one roofing company to another.

As you know the price of oil increased more than 80% in the last 6 month, which in effect increased the transportation and food costs. However, unless you are a roofer, or involved with construction industry, you may not know that roofing material prices have also risen more than 30%. This is especially true for roofing materials such as Rubber, Asphalt and Modified Bitumen roofing, as they all use oil-byproducts in as on of the base components. Since roofing contractors cannot absorb a 30% increase in material costs, as well as other cost increases such as gasoline price hike of more than 40% since November of 2007, the price of roofing installation is also on the rise. Expect a 10-20% increase in the roof price for the above mentioned roofing materials (EPDM, Mod. Bit. and Built-Up Roofing).

Fortunately, IB Roofs and PVC in general are not as dependant on oil-based components, so our pricing remains the same as it was 6 month ago! We do however anticipate a small price increase from the manufacturer in the next 6 months, as the cost of production increases, but for now, prices have been stable.

We have modified our roofing price calculator to reflect the recent material cost hikes by a reasonable 10%, and left the IB roof price the same.

Approximate Roofing project price (press 'Calculate Roof Price' button to get results):

Please note that if you are still receiving last year's prices, there is a good chance that you will receive a sub-par service, and/or your roofing contractor will use every chance to reduce their costs ( cut corners where ever possible ). No roofing contractor is immune from rising material prices unless they hold a huge inventor (nearly impossible). Therefore if you get a "great deal" you won't get a great roof.

Plug in your roof dimensions into the calculator. Make sure you account for any overhangs / soffits, as that may add significant area to you total roof size. If your roof has an odd shape ( 'L' shape or similar ) you can divide your roof into virtual 'rectangular blocks' and add up all your measurements to get the total square footage. Plug in that number and multiply it by 1. For example: if your roof is 2300 sq. ft., type 2300 x 1 into 'roof dimensions' section of calculator.

Use appropriate 'roof difficulty' setting to get a more accurate roof price estimation. Although your roof may look simple, roof penetrations like sky-lights, chimneys specialty vents, AC units, etc. take long time to flash correctly, therefore adding significant amount to the total roof price tag.

Choose desired insulation thickness. Insulation makes up significant part of total material cost, and in some cases may cost more than roofing membrane itself. Having good insulating value may seem expensive at first, but it will greatly reduce your energy costs, eventually paying for itself. However, if you already have some insulation, adding more will not have a dramatic effect compared to having no insulation at all.

When comparing prices of IB roof and the cheaper alternatives like Epdm rubber, bear in mind that total roofing cost concept. While IB has higher initial cost of installation, the difference in price will be more than offset by savings in future roof repairs, energy saving, and virtually no maintenance required for the IB flat roof.

When looking at the numbers produced by this calculator, bear in mind, that each roof is different, and your actual cost will depend on your roof's difficulty level, as well as number of other factors, such as ease of access, IB membrane thickness and type you choose, insulation thickness, etc.

Relative Roof Difficulty: Please Choose according to how many through-roof penetrations/HVAC units/Skylights/Vent or Hot-stack pipes, etc., are on the roof, as this will make significant price difference. The more penetrations, the more precision work will have to be performed.

* IB White Membrane has the highest solar reflectance rate of almost 90%. Energy savings refer to the avoided cost of electricity to operate AC in the summer. Our calculator does not consider the R-value of insulation, as a savings factor. However, the thicker the insulation, the more savings you'll realize all year round.
** Savings are calculated assuming the electricity rates in Metro Boston area from N-Star, effective April 1, 2007. Going rate then was $0.1875 / kWh, for the consumption of 1000 kWh per month. Electricity rates found in the following report from Hydro Quebec: Hydro Quebec Electricity Rates report - 2007 Your actual rate may vary. To calculate your rate per kWh, look at your last 12 electric bills. Add all 12 statement balances(excluding any previous balances or late fees), and divide by the total number of kWh consumed.

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