ONE SIZE DOES NOT FIT ALL

For the vast majority of roof systems, attic ventilation is required by the four model building codes (BOCA National Building Code, Uniform Building Code, International Building Code, and Standard Building Code). Despite these code standards, attic ventilation is not a "one size fits all" application. For example, in hot and humid climates, air intake can actually increase moisture problems in attics, or if you plan to build a very complex roof design, it many not be possible to ventilate every 'nook and cranny' of the attic. In fact, all of the model building codes allow for the design of vented and unvented roof systems (http://www.buildingscience.com/documents/digests/bsd-102-understanding-attic-ventilation/). Because of the complexities with this issue, Raynproof Roofing recommends you consult with a local building expert or contact your local building department before modifying your ventilation design.

BRIEF OVERVIEW

The National Housing Agency first recognized the importance of attic ventilation in 1942. Since then, the amount of attic ventilation required by building codes has steadily increased. During summer months, attic ventilation can reduce excessive heat and humidity build-up, while in the winter, proper ventilation can reduce problems associated with condensation and ice dams. Proper attic ventilation also promotes energy savings by reducing air conditioning costs during the summer and maintaining insulation performance during the winter.

At the current time, the ratio of 1 square foot of net free ventilation for every 300 square feet of flat attic area is the typical standard, with the stipulations that ventilation must be split evenly between intake and exhaust, and that the ceiling must have a properly installed vapor barrier that separates any 'conditioned' air space in the house from the unconditioned air space of the attic. For steeper roofs, or for roofs with more complex designs, sometimes the ratio of 1/150 is required. Read More...

Tags: ventilation| solar-power| attic ventilation| roof ventilation| Solar Blaster

Duradek is another great product that we have installed on homes here in the Northwest.

Tags: waterproofing decks

Here's a great resource for homeowners put out by the National Roofing Contractors Association. There's a lot of great advice for homeowners so we wanted to be sure to highlight it below:

Roof system components

All steep-slope roof systems (i.e., roofs with slopes of 25 percent or more) have five basic components:

1. Roof covering: shingles, tile, slate or metal and underlayment that protect the sheathing from weather.
2. Sheathing: boards or sheet material that are fastened to roof rafters to cover a house or building.
3. Roof structure: rafters and trusses constructed to support the sheathing.
4. Flashing: sheet metal or other material installed into a roof system's various joints and valleys to prevent water seepage.
5. Drainage: a roof system's design features, such as shape, slope and layout that affect its ability to shed water.

 

Choosing a roof system

There are a number of things to consider when selecting a new roof system. Of course, cost and durability head the list, but aesthetics and architectural style are important, too. The right roof system for your home or building is one that balances these five considerations. The following roofing products commonly are used for steep-slope structures. Read More...

Tags: roofing| tips| homeowners| roofing definitions

Today's wind advisory for Seattle area is still in effect through 9pm tonight. With gusts of 45 to 55 mph, homeowners should be on the lookout for blown off shingles tomorrow. Be sure to check your roof tomorrow. Look in your yard for shingle fragments. These are all signs that you need to have your roof inspected and possibly repair or replaced.

Since we are entering the raining season now, don't procrastinate. Contact a reputable, professional roofing company so they can evaluate your roofs condition before it starts leaking.

If you live in the Seattle area or anywhere in King County, by all means, give Raynproof Roofing the opportunity to serve you in this way.

Tags: wind advisory| roof damage| leaks

Here's another warning about roofing scams. This one is targeting mobile home parks.

The sheriff's office has tips for anyone having any work done on their home - manufactured or not:

• If you have an existing warranty, contact the number on your paperwork to confirm that you are dealing with the company who holds the warranty.
• Get multiple estimates.
• Before signing anything, always ensure a state-licensed contractor is doing the work.
• Verify licenser and check complaints with the Better Business Bureau.
• Request the contractor's certificate of insurance for workers' compensation and general liability coverage.
• NEVER give final payment until the work is complete.
• Never let anyone you don't know come into your home to sign papers or use the restroom.
• Conduct your business outside if you can.

Read More...

Tags: roof scams| homeowners| tips