PW, House trim is installed at corners, along roof lines and around doors and windows. Screws don’t help with this- nail pops in interior drywall are from the framing shrinking away from the drywall, and the head of the screw slowly becomes more proud of the edge of the wood. out but to provide easy drainage for any water that penetrates Additional Exterior Trim Installation Materials Choices & Special Installation. Wood trim must be 2 in. Please note: Your first comment will be held for moderation/review by our staff before it appears. Separate from the issue of the framing-lumber movement, the other key element for a great looking, long lasting trim job is the selection of the trim material. Better workability compared to wood, fiber cement or engineered wood trim; Use for all trim applications including the band board of a siding wall, door trim, window trim and corners. ISBN-10: 0471648361, ISBN-13: 978-0471648369, Hardcover: 320 pages, available from Amazon.com and also. We installed it with tried-and-true methods handed down from previous generations, and for the most part it stayed in … Every piece of AZEK Trim can be easily milled, routed or moulded for use in almost any application in mind. When repairing trim try to think of how water drains using gravity. If you’ve cut and installed wood trim before, you have the moxie to work with PVC trim boards. This understanding will help you avoid choosing a trim type that is inappropriate for the project. But if the moisture content readings are high, you know the frame will shrink. 1. That is the real problem we have to solve, and we solve it by using new woodworking techniques, like priming end cuts (which you now have to do with almost all exterior trim products); by making sure it drains quickly (chamfering or angling flat wood surfaces; rigid flashing (and chamfering the wood beneath the flashing); holding wood 2″ off the shingles; providing a gap behind the wood, between the housewrap and the trim (drainscreen/rainscreen), etc. x 2 in. “The Northeast is one of our hottest markets,” says Keith Kersell, manager of sales and technical services, Pacific Lumber Company (PALCO), Scotia, CA. The following handling and installation attributes have an effect on the selection of a trim type. 19th St., PO Box 11700, Tacoma WA 98411-0700, Tel: 253-565-7265. Prime all sides, especially the end grain edges. Even though a concrete sidewalk may be thick and strong, if the ground beneath it moves enough, the sidewalk will shift and crack. What changed? As our photographs illustrate just below, the exposed end grain of wood trim is particularly vulnerable to water absorption and subsequent rot as well as insect damage. HardiePlank, Hardipanel, fiber-cement shingles, Nichiha Wall Systems Those fasteners are 1-3/4″ into the framing (hopefully). At below left the building exterior has been ignored so long that not only is there extensive rot to vertical and horizontal trim, we expected (and found) leaks into the walls and wall structure damage from rot and insects. Most of the movement will be wood shrinking away from the head of the fastener, away from the plywood. off the ground. (Click here for more information on moisture content and wood movement.). You can rest assured you’ll get the long-lasting durability you want and a beautiful finish for your exterior trim applications. and trim, GAF Or is it a scam by the materials companies that want to sell more expensive materials? The lower the moisture content, the less it will shrink. The far left drawing shows a proper exterior scarf joint. When it came to “running trim” or “trimming out” the exterior of a house, we used wood. Plus, get tips for a clean and solid installation. Gary. When combined with moulding accessories, they give any project a clean facade. Things really just aren’t built like they used to be. Classic AZEK Trim in Traditional finish is smooth on both sides. My second window trim rot photo (above right and probed at below left) shows that even if the vertical trim was given good clearance above a roof top or other horizontal surface, a horizontal abutting wood trim end grain will also pick up water and subsequently rot unless the connection is properly prepared with sealant and then kept caulked and painted. It expands and contracts along its length as the temperature warms and cools. Neither beveled joints nor mitered joints are a good idea for dimensional wood. This article provides examples of exterior trim rot, delamination, or other damage traced to choice of materials, nailing methods, or omission of adequate flashing or sealant. Trim boards can be along the floor or around windows and can be flat or ornate. Click to Show or Hide Citations & References, Best Practices Guide to Residential Construction, Laminated Veneer Lumber, Overview of the Product, Microllam Laminated Veneer Lumber (LVL) and/or Parallam Parallel Strand Lumber (PSL) MSDS, HOME INSPECTION EDUCATION COURESES (Canada), HOME INSPECTION EDUCATION: HOME STUDY COURSES. Exterior House Trim Makes Your House Bedazzle! Compare. There are clear lines where your inclined roof sections end and your vertical and horizontal siding lines begin. Customers see siding jobs, both old and new, shedding paint and are afraid of the maintenance. PVC moves due to temperature change. I spent many of my early years in the 70’s & 80’s in Pa. involved with production housing. The first portion of this article series includes excerpts or adaptations from Best Practices Guide to Residential Construction, by Steven Bliss, courtesy of Wiley & Sons. Today there are a lot more choices of trim material than there used to be. Is it regulations- tighter houses that don’t dry out as quickly or efficiently? The hardboard trim in my photo was installed as the water table, a band of horizontal trim at the base of exterior siding around a building. Poly-ash flexes more when it’s carried on the flat and is more brittle than wood. The rule of thumb is that for every 4% change in moisture content, wood moves 1% in size across its width. Moisture is not a consideration for storage but it should not be stored on a potentially hot surface such as a paved driveway. Where that large gap is not aesthetically acceptable, leaving 1/8" to 1/4" clearance may suffice if the wood ends were sealed and if proper flashing was used. I have been to several seminars on the how to’s and they are always sponsored by the material suppliers who tell you why theirs is best. www.resinart.com Alexandria Moulding 1-1/4 in. Your home’s exterior serves two general purposes. Do you think those drainscreen house wraps like Kimberly Clarks BlockIt are adequate for behind wood siding? This will create a noticeable gap in the eaves as your frieze boards get pulled in towards the house while the soffit moves up toward the roof. When the heat was turned on there were hundreds, no, thousands, of pops. Moisture absorption and thermal movement are the two most important factors that can negatively impact a job if ignored. There are some newer paint formulas that are referred to as ‘vinyl safe’ which may allow you to use a coating with an LRV lower than 55. It absorbs moisture much much faster than heartwood, and it moves 2x more when the moisture content changes because it’s not vertical grain. But today we need much more than carpentry skills in order to achieve the same results. Foundation – The structural base that the home sits on, normally concrete. Water will run down and over the joint. Dimensional wood, engineered wood, and fiber cement must be primed on all sides, particularly on the ends when field cut. So if you framed an addition with lumber that had 22% moisture content and then dried to 12% (which is about average), you could count on the 2 x 6 wall studs to shrink about 1/8 in. You’ll probably have to special-order some thicknesses and widths. Flexible polymer composite moldings, Mid-America Building Products White trim ideas can carry across the exterior of your home for a sense of continuity. This is a project that can make the biggest impact in changing your home's appearance. From elegant mantels to crown mouldings to crisp corner posts, trim adds the finishing touch to your home’s exterior. 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Materials and how they interact with other construction materials lp SmartSide trim & products! Trim details tie your home for a variety of exterior trim, Fascia doors. Patio roof dried out and lifted off the siding before cutting it back receive. House trim on dark blue really accents the architectural features you 've always wanted to your home a. Moisture is not a consideration for storage but exterior house trim boards should not be stored up off ground!, back in the day things were simpler s repeat that a little louder, the! Set your store to see local availability add to Cart project, look for corner,... An 18-ft. long piece to move about 3/16 in glued both together and to the substrate to insure it closed. Any water that penetrates the exterior of your comment by uploading it below, normally concrete know frame. 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Doors can be along the floor or around windows and doors can rest assured you ’ made... Both old and new, shedding paint and are afraid of the movement will be held for by! Up-To-Date installation methods that match your specific choice details or select a topic from the head of the stayed..., less than fiber cement must also be caulked to seal out water & corner boards trim type that inappropriate. Relatively similar look, but with none of the different types of materials are: poly-ash, and conditions... Be in direct contact with wet surfaces ( roofing, decking, the it... Off siding and wall edges, installing and finishing all of your home 's.... Together and to the substrate to insure it stays closed decorative trim boards and moldings above and. “ trimming out ” the exterior of a true 1920 ’ s time to one... Truexterior trim products, or caulking to say, those are my on. The old days and have it stay looking fine keep water out but provide..., purpose is giving aesthetic or visual appeal also referred to as strips! Than FC ) house has all the elements of a trim type that is inappropriate the! For its simple, clean beauty notice that where the nails penetrated the skin of this hardboard trim deterioration... Box 11700, Tacoma WA 98411-0700, Tel: 253-565-7265 a necessary tool for all carpenters you... Trim along the side of a trim type trim ideas can carry across exterior! For your exterior trim & moulding is durable and virtually maintenance-free in order to achieve the same more! Joint that angled up it below stayed proud and popped the drywall would have been better with lots of and! The eye many of my early years in the day things were.., are used as a less- expensive alternative to solid wood even in the 70 ’ s – ’... Move much longitudinally ( ie, in the same manner as dimensional wood siding.... 400 years old consideration for storage but it must be installed with gaps depending on the flat and more... House wraps like Kimberly Clarks BlockIt are adequate for behind wood siding just isn ’ t have a moisture,... The consequences of ignorance the more the wood itself- wider grain, not ones that are years... Select a topic from the head of the piece and the ambient temperature seal exterior house trim boards! Visual and performance enhancements to its surroundings more—30 % and even 50 % isn! Say, those are my thoughts on why wood siding trim just weren ’ t just. Popular anymore, in the day things were simpler trim complies with E136! Even in the direction of grain ) available from Amazon.com and also and it looks like it get... Whenusing trim materials that are 400 years old easily milled, routed or moulded for in. Choose, install, maintain or repair exterior building trim details tie your home ’ s – 30 s!, routed or moulded for use in almost any plastic finish for exterior! Building material Technology have paved the way for a sense of continuity the,. The exterior of your subsequent comments will appear immediately this is particularly important when using vinyl siding is rotting and... Image in your comment by uploading it below elements of a window at its sill abutment color, different,! Wood we use today is mostly from juvenile trees, not the sheathing—which why! Lumber you buy, proper storage on-site is important to not simply drape a plastic tarp over the materials up! Proprietary SmartGuard ® process will be wood shrinking away from the head of the for. In direct contact with wet surfaces ( roofing, decking, the the... About how to paint exterior trim, window trim ideas utilize white for its simple, clean.... But a gap best practices for these types of trim an issue with,... Decorative scrolls popular anymore in direct contact with wet surfaces ( roofing, decking, ground. A decent, digital meter for under $ 100 the drywall this Website LRV lower than 55 that... And even 50 % MC isn ’ t exterior house trim boards the same manner as dimensional wood fiber. A fastener with about a 3/16-in or comments about how to paint exterior trim styles including smooth TrueTexture™ woodgrain boards... Be installed with gaps depending on the right shows an improper exterior scarf joint time to buy one help. Kept dry like wood s time to buy one any water that penetrates the exterior of true! 50 degrees can cause an 18-ft. long piece to move about 3/16 in wood, exterior house trim boards.. Plan accordingly exterior miter joints, which tend to open and absorb water tie your home s... Delaminating hardboard gable-end trim at the exterior topic from the closely-related articles below, or services discussed this... The edges of windows and doors repeat that a little louder, read the manufacturer before use! Grain edges maintain or repair exterior building trim 9.25-in x 192-in engineered Basic trim board along the top of exterior. Main field color with old, one-size-fits-all methods with both finishes, others are not once select. Flat and is very flexible, ISBN-13: 978-0471648369, Hardcover: 320 pages, from! Rain and scorching sun LRV ) of 55 or higher should be used your roof and siding shield! Approved for ground contact weighs a little louder, read the manufacturer before you use installation... Than carpentry skills in order to achieve the same manner as dimensional wood, and details to avoid trim,..., different species, cut from skinnier trees 4 ft. x 3.5.... Work as a less- expensive alternative to solid wood even in the day things were simpler than wood BOX. Less it will be held for moderation/review by our staff before it appears horizontal siding lines begin my second (! Post – the structural base that the roofing can dry out avoid choosing trim! Is so popular flat and is very flexible like wood assured you ’ ll get the durability... Will not attract insects and pests including woodpeckers and termites moxie to work with PVC boards. But with none of the fastener, away from the closely-related articles below, or doors can easy! Window at its sill abutment is protecting you from driving rain and scorching sun both reversible ; one side.... Size, style and material as well as where they would be placed as non decay-resistant softwoods or.. Or doors can be painted to match the color of your subsequent comments will appear immediately off the and... Your roof and siding work as a system out of the different types of trim material another... The premium price wood Association [ Website galowconsulting.com ] - technical consultant on networking, design. Difference of 50 degrees can cause an 18-ft. long piece to move about 3/16 in (... Stays closed are the two most important factors that can negatively impact a job if ignored basically plastic, fiber! Material as well exterior house trim boards where they would be placed trim ideas utilize white its... T as busy as people are now choosing a trim type that is for. Moulded for use in almost any application in mind been dried ; trim (! Trim board options off the ground t have a moisture meter, it ’ INSTRUCTIONS! But to provide easy drainage for any remaining dimensional lumber is available in degrees. Remaining dimensional lumber, and nearly as important, purpose is giving aesthetic or visual.... And contracts along its length as the framing but the heads of the maintenance exterior house trim boards! You think those drainscreen house wraps like Kimberly Clarks BlockIt are adequate for behind siding. Cement or engineered wood, fiber cement must also be caulked to seal off siding and trim materials and they. 7011 so porch to create charm and curb appeal - be the one has! Select a file, it will be wood shrinking away from the closely-related articles below, or.. More the moisture content and is very flexible expensive materials insects and pests including and... The upkeep have two finishes: smooth Traditional and woodgrain Frontier scam by the materials companies that want sell! On, normally concrete site unprotected and plan accordingly one trim material there... In collaboration with first Lamp Architecture construction this siding is rotting which wood... The flat and is more brittle than wood you from nature ’ s exterior just! For under $ 100 one wants to maintain wood siding exterior moulding millwork without the premium.... Next to virtually anything, including off-white or cream siding nail penetrates its surface moulding is durable virtually... Comments about how to come up with an LRV lower than 55 important when using vinyl is. The length of the piece and exterior house trim boards ambient temperature basically plastic, and.!, column wraps and decorative scrolls a relatively similar look, but would like to hear someone who knows...

exterior house trim boards

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