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Reroof Estimates & Inspections

757-399-3066 ext 1 (Reroof Estimates & Inspections)

News

Roof Insulation

Insulation is a pretty popular word in all types of construction because it is required by building codes and it can cost and / or save an owner big money, especially over time.  On flat and low slope roofs it must be considered closely in new construction and in roof replacement situations.

Your building code will dictate how much insulation you need when you build something new and sometimes may dictate what to use when you are reroofing.  An important thing to know is that when putting on a new roof, it is a good time to evaluate how your home, office or church is doing in the insulation department.

Make sure you consult your roofer when deciding what to install.

Roof insulation is designed to keep heat or cold in or out of the building effectively.  Insulation is measured by R Value. This is a measurement of the resistance of a building material to heat flow. The more resistance to heat flow in the material, the higher the R Value will be.

The most commonly used roof insulation is a rigid board called polyisocyanurate insulation and it is definitely good stuff.  It comes in different thicknesses and therefore different R Values. One inch thick “iso board” has an R Value of about 5.5 whereas one and a half inch is R9.  The R value goes way up, but normally we do not install more than R30 on a roof.  It may be installed in layers too.

Roofers attach insulation to the roof deck or sheathing and then install a single – ply membrane roof such as TPO, E.P.D.M., MODIFIED BITUMEN or even a built up roof system on top of it.

If your building is too hot in the summer or too cold in the winter, adding more R Value on the roof may contribute to fixing the problem. Old buildings sometimes have none at all.

Good luck!

Robert Andrews, II
757-286-7400 (cell)
robert@andrewsroofing.com

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Ventilation Requirements for Your Roof

When you install a new roof on your existing home or business or when you are building a new structure, (which will have a roof on it), it’s a good time to brush up on ventilation requirements.

Over the years ventilation knowledge and technology have changed. I have been in old buildings and residential homes which have no vents at all. I have also seen 10 year old homes with improper or insufficient ventilation.  Proper ventilation will provide you with an attic that is not too hot or moist which can cause problems. Bad ventilation can allow mold, condensation, wood rot, shortened shingle roof life, higher energy bills, etc. I have been in attics that are completely wet to the touch and by sight on the bottom side of the roof sheathing because of lack of vents. We vented it and it dried right up. When getting roof consultations or estimates, ask the contractor if your vents are ok for your home. He should know much about it.

A proper ventilation system is balanced. The intake at the eave should be equal to the exhaust at the ridge. This makes for an even flow of air to keep the attic and roof deck in ship shape. Different climates have different air volume requirements.

Make sure you do not have conflicting types of vents on your roof like a power fan beside a slant back gravity vent , for example.These are both exhaust vents and that fan will probably pull air into that slant back vent making it an intake vent. This is like a short circuit in electrical systems.

This is just basic and general info about roof and attic vents. Your roofing contractor should be able to evaluate your home and either replace your vents with new ones, if your system is good,  or change the way your house vents all together. It will pay off in the short and long runs if you handle it at new roof time.

Bad ventilation will void your shingle warranty and shorten the life of your roof. This is true in asphalt or wood shingles or shakes. We like to use AIRVENT products because of their quality, availability, variety, customer service, and training.

AirVent

Many architectural or dimensional asphalt shingle roofs are now made with limited lifetime material  warranties if installed and vented properly. Our favorite type of exhaust roof vent is ridge vent because it is at the ridge and is continuous ventilation which leaves no “hot spots” under the roof deck.

Thanks and have a good day!

Robert Andrews II
President
robert@andrewsroofing.com
757-286-7400

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New Roof, No Mess!

That is right. During your roof job, it looks like maybe you are having minor  work  done because 99% of the old roof coming off never hits the ground!  We now have a new piece of equipment known as “The Equipter.” There are less than 500 of them in existence today.

the EquipterThe Equipter is a medium size dump trailer that goes up in the air to receive trash. It is self propelled and has big, wide  wheels that won’t damage your yard or  beds. The job site stays much cleaner and safer and the job takes less time to complete because the trash never hits the ground. We only touch it once instead of a second time picking it up in your yard.

When a residential shingle roof is replaced, tons of trash are removed and tons of new roofing are put back on. The average home has about 8,000 lbs. of shingles to remove and dispose of. A big part of the job is to manage this trash and keep it from damaging property.  This Equipter makes it much easier and faster to complete your roof job. It is especially appropriate if you have a well-maintained yard. A 1.25 day roof now only takes 1 day!

It is also a pretty cool thing to watch in your yard. Anyway, Thanks and have a good day!

Robert Andrews II, President
robert@andrewsroofing.com
757.286.7400

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Quality Roof Installation and Roof Repairs: Picking the Right Roofer or Roofing Contractor

There are all types of roofing and several manufacturers make them. The different main types of roofs are flat roofs, low slope roofs, and steep roofs.

An example to use here is steep roofing material. Asphalt shingles are a practical and cost effective way to roof a building, house, business or church that has a 4/12 pitch and goes up to almost a vertical slope. Asphalt shingles are made by 4 or 5 major manufacturers that I am familiar with. We like CertainTeed the best because of many reasons, but the other 3 or 4 guys’ products are at least acceptable as well. The point is that you do not have many manufacturers of asphalt shingles to choose from, but you do have MANY roofing contractors or roofers or roofing companies to choose from just in your local area. These roofers are all over the chart as far as quality installation is concerned. One can install a shingle roof incorrectly that has to be replaced because of roof leaks or other problems in as little a time as a month. Yes, this is true. We are expert witnesses in cases like this. But the big surprise is that a roof can be installed “good enough” and perform for 10 years or be installed very well and last 30 plus years. This is for real.

A good roofer has been doing it for a while of course, but he also must know what the manufacturer says about installing their product.  Conventional roofing industry wisdom is good but we must follow manufacturer specifications to make the roof its best and to make warranties count. A manufacturer in most cases is not responsible for the quality of the installation. They won’t stand behind it if it is not on right.

You do not want to be stuck with no warranty left after a few years because your roof wasn’t installed just right. The shingle makers spend big $ on engineering designs and testing to make sure their product stands up to elements such as wind, rain, and beating sun.

Think about it – that roof is the building’s first defense against these forces and it must do well for a long time. If they build that shingle, they know how to put it on for best performance and duration of service. Ex. Put the proper # of roofing nails in the proper spots. Use the right galvanized roofing nail and it must be the designated length. Do not drive the nail crooked or too deep and damage the shingle. These are just a few items to know about just the nails. This is the “tip of the iceberg.”

Trust me and take time to pick the roofer who will install a roof SYSTEM – not just a roof. The roofing crew needs real  roof mechanics, quality supervision, and a thorough post job inspection. The inspection should be done by a manager of some sort, preferably one who doesn’t work on the crew. He must get on the roof and look it over closely before you pay. Here are pointers for getting the right man for the job. He must be….

1. licensed and insured
2. certified by the manufacturer
3. in business [same entity] for a while
4. able to provide references of people with roofs like yours
5. able to give you addresses of buildings he has installed roofs on like yours
6. not the lowest price by too much,especially REALLY low
7. not financially challenged , if he is he may not be able to finish
the job or honor the labor warranty down the road
8. in possession of good equipment [ride by an ongoing job to see]

I could continue but I have probably said enough for now .  I am very
grateful that you read this.
Please contact me for guidance if you need it.
I really like this roofing stuff.

Robert Andrews, II, President                                                        robert@andrewsroofing.com/757-286-7400

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Standing Seam Metal Roofs

Well, these aren’t for every building or every building owner, but they
are one of the most high quality roof systems you can install. Also,
they are becoming more popular partly because of the rising cost of
petroleum causing fiberglass asphalt shingle roof prices to climb over
the last several years. A standing seam metal roof can seriously
enhance the structural integrity and look of your home or business.
It comes in steel, aluminum, copper, and stainless steel, to name a
few.

All of these are at least a 50 year roof and are to be considered
a lifetime roof system. Why? Because they are made of metal, for one
thing. Metal of course is rigid and strong so it does not damage
easily and can give you a very high wind rating. In most cases it is
screwed down with hidden fasteners so the elements never get to these
screws and cause corrosion. You can use as many screws as you want to
make it very wind worthy.

The technicians are metal roof mechanics and sheet metal mechanics who are highly specialized so they know how to custom fabricate and install every roof as per the particular building design. They are among the most technical workers in all of construction, and aren’t scared of heights either.

Coil metal or flat sheets are run through a roof panel machine for different lengths, widths, and profiles custom to the shape and measurements of the building. Then they are installed. Some standing seam metal roofs [copper mostly] are hand crafted without a machine  for historic buildings. These roofs don’t leak if put on right.  Not just anyone can do it either, so please be sure you pick a roofing contractor who has the men, equipment in their sheet metal shop, and knowledge for the job. Most roofers don’t even do standing seam metal roofs. It is too complicated. See the roofs they have done and see their equipment too.

Although standing seam metal roofs are put on many commercial and residential buildings, as the main roof system they are also used to accent other types of roofs like shingles, tile, shakes, and slate roofs. Many times, bay windows, return roofs and bird walk roofs have metal on them. Some shopping centers have them on the front canopy to draw the eye of tenants and customers. Beach houses and cottages use them for wind resistance and high end aesthetics. High rise buildings and church steeples have them because their owners never want to replace their roofs after original construction. They are too high! There are many 16 ounce copper roofs way up in the air that are rarely seen or touched in Hampton Roads.  Downtown Portsmouth and Norfolk, Suffolk, and Williamsburg are full of them. The old tin roofs we remove are usually 100 plus years of age and today’s metal is better.

The main thing is that if you put a metal roof on your home or business, it will perform very well and will be the last one you ever install, no matter how old you are.

Robert Andrews ll                                                                                                                 robert@andrewsroofing.com

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Your Home Is Not A Submarine

I have said it before; Your home is not a submarine…and even subs leak!

Fiberglass – asphalt and other types of roof shingles, such as tiles, shakes, slate, are not water proof. They are designed to shed water on a pitched or sloped surface. The steeper the better. Steeper surfaces shed water faster and dry faster.

You can’t put shingles on a pitch lower than 2 in 12″[roof rises 2″ in 12″] . We do not recommend it on slopes below a 4-12 pitch without special conditions. Roofs lower than a 2-12 need a roof system designed for “low slope roofs.” These are single – ply membrane roofs such as TPO , E.P.D.M. , P.V.C. , or modified bitumen . And just because shingles are on it now does not mean you should replace that roof area with the same thing. Even if it doesn’t leak now , it may in the future.

No responsible roofer would use the wrong type of material. A good roofer looks at every roof on a case by case basis. For example: A low pitch or low slope roof in a heavily populated suburban area not near large open spaces of land or water is not the same as one facing north on the river in Hampton Roads, Virginia cities such as Portsmouth, Norfolk, Virginia Beach, Chesapeake, Suffolk, Smithfield, York Town ,Hampton, or Newport News.

I might nail a shingle roof on a 3-12 pitch on the first roof described above, but not on the second. On the second I might recommend a low slope roof system or maybe install ice and water shield under the shingles in case wind driven rain forces itself in. And I might even use stainless steel roof nails so they won’t rust out by being wet too often for too long. #15 or #30 lb double layer asphalt saturated felt paper or “tar paper” roof underlayment might be an option as well.

Our roofers have been doing at this for a while so we have the ability to consult with you in these matters. We have seen all kinds of roof leaks and all kinds of roofs leak! We also listen to what the manufacturers say about how and where to install their roofing products . We are always sure to meet building codes.

We recommend the use of CertainTeed Landmark and other models of shingles made by CT because of their #1 rank on consumer reports and because of our experience over the years using all name brands. We took years to pick the horse we would race so you don’t have to worry about it!

So please remember: No matter how good the roofing material is, it must be installed in the right place and in the right manner to perform and do so for a long time. Ask the roofer and find out how much he knows before you hire him. The right decision in picking a roofing contractor or company is very important.

Thanks for reading!

Robert Andrews ll, President Andrews Roofing                                                                           757 Mount Vernon Ave, Portsmouth, VA 23707                                                                     757-286-7400  I  robert@andrewsroofing.com 

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