Is the LP SmartSide architectural series cedar shake siding primed?

Yes. It is primed on the face and edges.

Can I install SmartSide over foam sheathing?

Man performing HardiePlank siding replacementYes. The fastener length must provide 1.5‐inches of penetration into the wood stud or combined wood sheathing and stud. Avoid compression of the foam sheathing. Refer to the foam sheathing manufacturer’s installation instructions, the LP® SmartSide® installation instructions, and the LP® SmartSide® code reports. LP® SmartSide® precision series panel siding provides wall bracing when installed over wall assembly with maximum 1‐inch thick foam sheathing on the unconditioned side and ½‐inch gypsum on the conditioned side.

Can I use a traditional transparent or semi‐transparent stain on SmartSide products?

No. These stains are typically low in solids and provide less protection from UV and other weathering effects. There are new acrylic latex paints commercially available that can replicate the appearance of a semi‐transparent stain. Refer to the installation instructions for proper finishing.

Can I use a solid stain on SmartSide products?

Yes. These stains are generally lower in solids so increased maintenance will probably be required. Refer to the installation instructions for proper finishing.

Can I leave Knotty Barnside project panel natural or unpainted?

No. It must be primed and painted. Refer to the installation instructions for proper finishing.

Can I use a transparent or semi‐transparent stain on Knotty Barnside?

No. These stains are typically low in solids and provide less protection from UV and other weathering affects. There are new acrylic latex paints commercially available that can replicate the appearance of a semi‐ transparent stain. Refer to the installation instructions for proper finishing.

Can I install SmartSide trim over lap siding, rather than butting to it?

Yes. Special precautions should be taken to provide proper spacing between the lap siding and the trim, as well as fastening of the trim.

Can SmartSide panel be installed horizontally or diagonally?

No. LP® SmartSide® panel siding is designed specifically to be installed parallel to the framing. Refer to the LP SmartSide® Precision series panel siding installation instructions.

What kind of nails do I need?

Corrosion resistant fasteners must be used to avoid rust staining and erosion of the fasteners. Please refer to the proper installation instructions and code report for the minimum size and type, as well as the fastening schedule.

If the installation is not consistent with the application instructions, will it void my warranty?

The LP® SmartSide® limited warranty will remain in effect with the exception that any issue caused by an installation that varies from the LP® SmartSide® installation instructions will not be the responsibility of LP. Refer to the installation instructions for proper installation.

Can I install SmartSide® lap vertically and cover the joint with battens?

No. LP® SmartSide® siding is designed for horizontal installation only. Un‐grooved LP® SmartSide® Precision series panel siding is available for board and batten applications. Refer to the installation instructions for proper installation.

What is the fire rating?

LP® SmartSide® is a class C (III) rated product when tested according to ASTM E84. All LP® SmartSide® siding can be used in a 1‐hour fire rated assembly when it is installed over 5/8 type‐X gypsum, which is consistent with other siding types such as fiber cement siding.

What kind of paint must I use?

Acrylic latex coatings designed for wood composites are highly recommended. Refer to the installation instructions for proper installation.

How do I install LP® SmartSide® siding over SIP or ICF assemblies?

Follow the LP® SmartSide® installation instructions. The SIP manufacturer will need to specify the type of corrosion resistant fastener and the fastener spacing to meet the minimum required wind‐load values. The fastener spacing must not exceed the maximum fastener spacing stated in the LP® SmartSide® installation instructions. If you have further questions, contact the LP Technical staff at (800) 450‐6106. Consult your local code authority to ensure compliance with the local building code.

Is it beneficial to prime the back side of the LP® SmartSide® siding or trim?

No. Back priming has proven to be useful to control tannin staining with some types of solid wood siding, trim, and some composite sidings. LP® SmartSide® products are designed to perform without back priming.

Should we caulk at the overlap of the lap siding?

No. Refer to the installation instructions for proper installation.

Can we rip lap to create a smaller size?

It may be necessary to rip the lap siding at times where the wall terminates at the soffit or around penetrations. Use special care to prime and paint any exposed wood that may result. Ripping the lap siding to make narrower lap siding is not recommended. Date: November 2009 Preceding Version: June 2009.

Can LP® SmartSide® trim and fascia be miter cut?

Do not miter cut the edges or ends of the trim at corners. Miter cuts or “picture framing” around door and window openings are acceptable. Butt joints are preferred but scarfed joints are permitted with LP® SmartSide® trim and fascia. All joints must be spaced 3/16 inch to accommodate expansion during equilibration. Refer to the installation instructions for proper installation.

Can I overlap my LP SmartSide siding more than the recommended 1”?

Yes but the siding should not project beyond the thickness of the trim. The specified overlap and edge‐spacing of the nails in the installation instructions are minimum requirements. Refer to the installation instructions for proper installation.

Are there any special considerations when applying any panel siding to the interior of my home and is this application allowed and will my warranty be good?

Using LP® SmartSide® in an interior application is acceptable. Please review the material safety data sheet (MSDS) before using the product indoors.

When panels are installed, is it ok to allow the panel to rest on the flashing?

No. A drainage space is required between the panel drip edge and the flashing. Refer to the installation instructions for proper installation.

Now that your fiber products have Zinc Borate, can they be used west of the Cascades?

LP® SmartSide® Architectural and Precision Series Siding can be used west of the Cascades. Certain LP® SmartSide® Foundations Series siding cannot. See the Smart Side warranty for complete details.

Are LP SmartSide products “green”?

The green attributes built into LP products today are recognized in green building certification programs around the country, most often in the “Materials & Resource Efficiency” section. b. LP uses 100% SFI‐certified wood – a renewable resource from small diameter, rapidly regenerating trees c. LP® SmartSide® products are treated with environmentally friendly borates to resist rot, termites, and mold d. LP® SmartSide® is durable and comes with a 50‐year limited warranty.

Can LP® SmartSide® siding be used in a one‐hour fire‐rated wall assembly?

Yes. It must be installed over 5/8‐inch type‐x gypsum the same as fiber cement siding.

Are LP SmartSide® products compliant with the building code?

Yes. LP® SmartSide® Precision series Lap and Panel siding is covered by the ESR‐1301 code report. LP® SmartSide® Foundation series lap and panel siding, and architectural shake and panel meet the requirements of ANSI 135.6 and therefore satisfy the requirements of the 2006 International Building Code. Code report NER‐626 also represents the Foundation and some of the Architectural series siding products. The code reports are available at: Date: November 2009 Preceding Version: June 2009

Can LP® SmartSide® siding be fastened directly to the studs?

Certain LP® SmartSide® products can be attached to framed walls without sheathing such as Precision series siding. Refer to the LP SmartSide installation instructions for the specific type of LP® SmartSide®e siding you are using. Note that a code‐approved breathable water‐resistive barrier is required between the siding and the studs.

Why are the LP® SmartSide® code reports important?

The code reports are published by the International Code Council and demonstrate the safe use of the siding. The code reports are useful to engineers, architects, and code officials to ensure the siding is used within its design limits.

Is a house‐wrap required behind the LP® SmartSide® siding?

A code‐approved, breathable, water‐resistive barrier is required behind all LP® SmartSide® siding as per the International Building Code. Refer to the installation instructions for proper installation.

Can I install LP® SmartSide® siding differently than what is specified in the LP SmartSide installation instructions?

LP strongly recommends LP® SmartSide® siding be installed according to the installation instructions. If the siding is installed in a manner inconsistent with the instructions, the siding will continue to be warranted under the LP® SmartSide® limited warranty although any issue caused by the inconsistent installation will not be the responsibility of LP. Refer to the installation instructions for proper installation.

Why is it important to space LP® SmartSide® siding at all joints?

LP® SmartSide® siding will expand naturally as its moisture level balances with the surrounding environment. Spacing the joints provides the necessary room for the siding to expand. This is also an important reason to properly apply a non‐hardening caulk or sealant. Refer to the installation instructions for proper installation.

Do LP SmartSide products resist wind loads?

Yes. Refer to the LP® SmartSide® code reports ESR‐1301 and NER‐626. 34.

Is LP SmartSide panel siding structurally rated?

Some LP® SmartSide® siding is structurally rated.