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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchThe most important tricks for treated lumber are straightforward: choose a product suited to its exposure, protect every field cut and drilled hole with a suitable preservative, use compatible corrosion-resistant hardware, and let the wood dry before finishing. These steps help prevent avoidable decay, splitting, corrosion, and peeling finishes.
Choose lumber for its intended use
“Pressure treated” describes a treatment process, not a guarantee that every board is suitable for every location. Check the end tag and select lumber rated for the project’s exposure and application. The USDA Forest Service explains treated-wood selection in its treated wood guidance; product labels and local code requirements should guide the actual build.
Protect cuts, notches, and drilled holes
Factory treatment may not protect wood exposed when you cut or drill it on site. Brush an appropriate wood preservative onto field-cut ends and drilled holes, following the product label and confirming it is suitable for the lumber treatment and use. Copper naphthenate is one available formulation. Deck stain and sealer are not substitutes: Viance says they do not provide adequate protection for these exposed areas.
The 2021 International Residential Code, Section R317.1.1, states: “Field-cut ends, notches and drilled holes of preservative-treated wood shall be treated in the field in accordance with AWPA M4.” Check the code adopted where you are building and follow the preservative manufacturer’s directions. See the 2021 IRC and Treated Wood FAQ.
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- Anti-Corrosion Coating: Deck Screws 1-5/8 Inch passed 1000 hours salt spray test. 4-layer coating provides superior protection against rust and corrosion. These exterior wood screws can be exposed to the sun, humidity, rain and snow for a long time
- Serrated Threads: Torx screws with 6 contact points prevent stripping, save drive torque and further fasten screws into wood construction, without loosening or slipping
- Self-Tapping Point: Construction screws with coarse screw threads and a self-drilling point design can eliminate the need for a pilot hole and increase tapping power. Exterior screws are ideal for wood, decks, fences and other wooden structures
- Exterior Deck Screws: The screws set is easy to use and carry in the box. The premium wood screws are durable and sturdy to use in various materials. Carbon steel deckmate screws can be used in ACQ, CA and CCA pressure-treated lumber or composite decking
- 2 T25 Torx Bits: Wood screw set with box includes 700 pcs #8x1-5/8" wood screws, one 50mm and one 100mm T25 bits. T25 bits for matching screws allow you to install easily
Match fasteners and connectors to the treatment and setting
Use code-approved corrosion-resistant fasteners and connectors that are compatible with the specific treated lumber and the project’s exposure. Viance identifies hot-dipped galvanized and stainless-steel hardware as options; it recommends code-approved stainless steel for coastal or very wet settings. Do not mix metals without checking compatibility, since incompatible hardware can corrode. Verify the product specifications and local requirements rather than assuming one fastener suits every project.
For installation guidance, see Treated Wood installation and care.
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- QUICK AND EASY INSTALLATION: Secure your deck projects with Grip-Rite Exterior Screws. A sharp point penetrates materials quickly and smoothly, while the coarse thread secures a tight connection. Ideal for treated and untreated lumber.
- EXTERIOR WOOD SCREWS: PrimeGuard coating protects against weather-related corrosion and rust. Made from steel for durability and strength.
- PROFESSIONAL FINISH: Recess and bugle head creates a strong connection between the tooltip and fastener for confidence during driving and a smooth, countersunk finish.
- FOR OUTDOOR PROJECTS: These wood screws provide a strong, long-lasting hold. Use them for exterior construction projects, such as wooden decking, fencing, and outdoor projects.
- WE BUILD AMERICA: Since 1975, Grip-Rite has been your trusted partner. We deliver innovative and reliable solutions for the task at hand, day one through the lifetime of a project.
Reduce splitting and install posts as directed
- Pre-drill near board ends before driving fasteners to help reduce splitting.
- Drive fasteners flush with the surface; do not overdrive them.
- For ground-contact support posts, place the uncut end in the ground, as Viance recommends.
Wait for the wood to dry before finishing
Do not decide readiness by the calendar alone. Treated lumber is often ready for stain or water-repellent finish at about 60 days after installation, according to Viance, but that is a rule of thumb—not a universal waiting period. Drying depends on when the lumber was treated, sun exposure, temperature, and recent weather.
Try the water-drop check: put a few drops on the surface. If the wood readily absorbs them, it is porous enough for finish under Viance’s rule of thumb. A moisture meter calibrated for treated wood can provide an additional moisture-content check, but it does not replace the finish maker’s instructions or establish a universal readiness threshold. The Canadian Wood Council discusses moisture meters in its moisture meter guidance.
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Choose and maintain an exterior finish
Once the lumber is dry enough, choose an exterior oil-based or water-based stain or water-repellent finish suited to the appearance and protection you want. Follow the finish maker’s instructions for preparation, application, and reapplication. A product with UV protection can help preserve appearance. Keep the project clean and maintain the finish on the schedule its maker recommends. A finish protects the surface; it does not replace preservative on cuts and drilled holes. See Viance’s staining guidance.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Handle scraps and treated wood safely
- Wear appropriate protective equipment while cutting and handling treated lumber.
- Wash your hands after work.
- Do not burn treated lumber or use it as mulch.
- Dispose of scraps according to local rules.
Viance’s Treated Wood FAQ provides its handling and disposal guidance. Local disposal requirements can differ, so check the rules that apply to your area.
Quick Recap
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- GALVANIZED DECK SCREWS FOR OUTDOOR WOOD CONSTRUCTION: #10 x 3-1/2 in. galvanized deck screws are engineered for decking boards, fence panels, railing systems, and exterior wood framing in residential and professional construction projects.
- GALVANIZED COATING FOR SUPERIOR CORROSION RESISTANCE: Each screw features a galvanized finish providing strong rust and corrosion protection in outdoor environments, extending fastener life when exposed to moisture and weather conditions.
- ENGINEERED FOR ACQ, CA, AND CCA PRESSURE-TREATED LUMBER: Recommended for use with modern pressure-treated lumber types for outdoor structures including decks, pergolas, fencing systems, and exterior wood framing assemblies.
- DUAL-TORQ DRIVE FOR FLEXIBLE INSTALLATION: Dual-Torq drive system works with both Phillips and square drive bits, allowing use of preferred driver while maintaining strong engagement and reducing cam-out during outdoor installation.
- TRUSTED HILLMAN DUAL TORQ DECK SCREWS: Hillman galvanized deck screws deliver consistent quality and dependable fastening performance for decks, fencing, and exterior wood structures in construction and home improvement applications.
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- GALVANIZED DECK SCREWS FOR OUTDOOR WOOD CONSTRUCTION: #6 x 2 in. galvanized deck screws are engineered for decking boards, fence panels, railing systems, and exterior wood framing in residential and professional construction projects.
- GALVANIZED COATING FOR SUPERIOR CORROSION RESISTANCE: Each screw features a galvanized finish providing strong rust and corrosion protection in outdoor environments, extending fastener life when exposed to moisture and weather conditions.
- ENGINEERED FOR ACQ, CA, AND CCA PRESSURE-TREATED LUMBER: Recommended for use with modern pressure-treated lumber types for outdoor structures including decks, pergolas, fencing systems, and exterior wood framing assemblies.
- PHILLIPS DRIVE FOR EASY, CONTROLLED INSTALLATION: Phillips drive head allows easy driver bit centering during installation, providing dependable torque control and efficient fastening using standard screwdrivers or power drills.
- TRUSTED HILLMAN DUAL TORQ DECK SCREWS: Hillman galvanized deck screws deliver consistent quality and dependable fastening performance for decks, fencing, and exterior wood structures in construction and home improvement applications.
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