Friday, September 17, 2010

Measuring Your Roof to Determine Total Need of Roofing Supplies


Roof measurement is not hard, but because it occurs in three dimensions instead of two it takes a little more than simple arithmetic. Roof measurement is important if you are considering hiring a Denver roofing contractor for a job because it is a basis for pricing. The total area is how the roofer determines how much roof materials they need.

Except spray foam which starts in two mixable liquids, most roofs are measured in squares. One roofing square is 100 square feet. You do need some geometry to measure areas. The formula for a side of a triangle is area equals half the base times the height. This is useful for end gables which are already triangles. However most roof sections are four sided. So first you will need to determine the length of the angled side of the roof.

You could determine the roof area with just the floor plan but that would take some trigonometry. It could be easier to just clamber upon the roof and get the distance from eave to peak. To help out, divide up pieces of the roof into triangles or rectangles. The rules for these shapes are much easier to calculate. But it is never a bad idea to ask the Denver roofing contractor to check your figures.

To determine the roof slope, you need to break out that old formula from algebra - rise over run. So just take the height of your roof from eaves to peak and put that over the distance from the center of the roof to the eaves. This is your pitch. Another way to calculate it is with a level. Set a level of known proportions (best a one foot level) set one end on the roof and make it level. Then measure the distance to the roof on the other side. That measurement in inches is your rise over 12 for a one foot ruler. Otherwise just divide. If it was 3 inches that would be expresses3/12 or 1/4.

Once you find the total area in square feet, this is divided by 100 to find the number of squares of roofing material the Denver roofer has to order, plus extras.

Roofing Preventative Maintenance


If you have a little bounce in your knees you can do your own periodic roof inspections. Going up on the roof a twice a year can give you a heads up on problems before they cause water damage. The roof's job is to take all the abuse from weather and falling objects to protect the home. Over time it will tend to wear out.

This article will go over each of the common types of roof and the recommended inspections and maintenance for each one. I got these recommendations from my friends who do Denver roof repairs.

Asphalt shingles are the most common roofing material, however they can be the most fragile. To start inspection, remove all degrees because gutters and drain lines are often the first to go. Roof penetrations are other common areas of water ingress. Loose shingles can be firmed up with a dab of roof cement. Check caulking and sealants. While most roofs do a good job against weather, they are not so good at stopping hundred pound branches. So trim back overhanging branches.

Bitumen and built up roofs are a little different because they are flat. This means any pooling water is a real problem. Remove debris to help stop this. To repair bald spots in gravel roofs, brush out the areas and add mastic and loose gravel. Blisters are a common problem. They should not be handled themselves. Stepping on one can cause an instant leak so call your Denver roofer. Water is your enemy. Check sump drains for proper drainage.

Wood shingles are organic materials so they are especially vulnerable to moss and algae. The common Denver roofing repair is to install zinc control strips which stop these kinds of organisms from growing. Check mortar and flashings around penetrations. Look for rust, small amounts can be fixed with rust away, large amounts could be a signal of a drainage problem or the need for new flashing.

Single ply and spray foam roofs are similar visually to the built up roof. Single ply roofs only have one layer of protection so be careful of any possible punctures as this will lead to a leak. Check the edge trim. Roofs are designed to stop water coming down from above, not from below or the side. So the edge weather stripping needs to be intact or water will seep in.

Wednesday, September 1, 2010

Green Roof Building


Green roofing is an exciting new prospect for the roofing industry and the world. Green roofing has the potential to take wasted space on the millions of roofs needlessly absorbing the suns energy and convert that into something useful. Green roofing does present some unique problems. Usually roofs are designed to remove water as quickly as possible, but vegetation needs water, and there will be an additional layer of sometimes wet growing material for the roof to support. This means that the roof must be much stronger to support all this additional weight. The roof also needs a very effective drainage system that keeps the part below the growing material dry.

The soil and vegetation layer of a green roof usually consists of low maintenance plants. Therefore the typical roof does not need a irrigation system. If the roof is more for looks or to play on, a irrigations system may be installed. These should be drip systems that deliver the water to the roots to minimize evaporative water loss. But most will let the plants grow naturally. A Denver roofing contractor may have to consult with a nursery on the correct type of plants.

The scientists behinds these roofing systems divide them into intensive and extensive categories. The extensive roof is also called an eco-roof. These are thinner and lighter, but the reduced soil limits the vegetation options. The common plants are mosses and grasses. These grow in a low profile and require little maintenance.

If your Denver roofing contractor is more ambitious, you could try an intensive roof. These have enough soil to make a full garden. This type of roof is ideal if you are looking to make a rooftop garden oasis. Small trees, and little patios can even be housed with enough structural support. If you do get your Denver roofing contractor to install and intensive roof, you will probably have to hire someone to maintain it.

Green roofs are very good insulators and reduce the heat of the roof overall significantly. This saves on heating and air conditioning costs. This can help reduce the heat island effect in urban environments. The plants and soil also filter the air and water in the area. Green roofs are especially popular in urban environments because they add yard space in areas where this was impossible.