While we design all our XtremeTrim® with drain dams for vertical runs and shingle fashion for horizontal profiles, its primary design is for aesthetics. XtremeTrim®, including water management profiles, will not stop all water from penetrating the surface of the cladding. The primary insurance of moisture mitigation for the building envelope is your housewrap, preferably a drainable housewrap. Other options are to use rainscreen along with your housewrap. We recommend that you consult your siding manufacturer for best practice application when installing XtremeTrim® with their siding. As all building professionals know, water is the most significant factor in the premature deterioration of buildings, and why proper steps should always be taken to protect the envelope.

Leakage paths exist at any opening in the wall surface, whether intended or unintended. Joints between materials and around windows and doors, vents, cracks, and porous surfaces are all potential entry points for water. This is why all flashing profiles must be properly sealed with flashing membrane and all windows and door openings flashed in shingle fashion.

All standard XtremeTrim® profiles do not form a moisture management system. The architect, builder, designer and contractor are responsible for designing and installing a code compliant building envelope. Below are the current code minimum requirements.

Tamlyn XtremeTrim® products are not part of an EIFS system and not designed or intended to be used in an EIFS or similar system.

INTERNATIONAL RESIDENTIAL CODE 2006

WALL COVERING - SECTION R703 EXTERIOR COVERING

R703.1 General. Exterior walls shall provide the building with a weather-resistant exterior wall envelope. The exterior wall envelope shall include flashing as described in Section R703.8. The exterior wall envelope shall be designed and constructed in such a manner that prevents the accumulation of water within the wall assembly by providing a water-resistive barrier behind the exterior veneer as required by Section R703.2 and a means of draining water that enters the assembly to the exterior.

R703.8. Flashing. Approved corrosion-resistive flashing shall be applied shingle-fashion in such a manner to prevent entry of water into the wall cavity or penetration of water to the building structural framing components. The flashing shall extend to the surface of the exterior wall finish. Approved corrosion-resistant flashings shall be installed at all of the following locations.

EXTERIOR WALLS - SECTION 1403 PERFORMANCE REQUIREMENTS

IBC § 1403.2: Weather protection. Exterior walls shall provide the building with a weather resistant exterior wall envelope. The exterior wall envelope shall include flashing, as described in Section 1405.3. The exterior wall envelope shall be designed and constructed in such a manner as to prevent the accumulation of water within the wall assembly by providing a water-resistant barrier behind the exterior veneer, as described in Section 1404.2, and a means for draining water that enters the assembly to the exterior. Protection against condensation in the exterior wall assembly shall be provided in accordance with the International Energy Conservation Code.

Before Installing
Read construction drawings to ensure correct layout and placement and ensure that building wrap or rain screen (where applicable) is in place. An outside corner is the best place to start installing XtremeTrim®. Choose one that makes the most sense for your project. XtremeTrim® System Reveals offers many options.

Cutting and Painting
Use a non-ferrous carbide miter saw blade when cutting XtremeTrim®. Use Direct To Metal (DTM) paint when jobsite painting.

Fasteners and Fastening
Stainless steel fasteners are recommended. XtremeTrim® profiles may be secured in place with a few SS nails until fastened through panels and into studs during panel or plank fastening per siding manufacturer's instructions. Aluminum fasteners may also be used.

Fastening Fiber Cement
It is recommended by most manufacturers that inset fiber cement panels be fastened to the wall with Stainless Steel Torx Head Screws or Hot Dipped Galvanized Siding Nails.

Butt Joint
Sealant is required between butt joints where two trims come together. May also be further protected by use of a piece of XtremeFlashing® behind the butt joint or with a metal flasher behind the joint. Carefully align butt joints for smooth transition if more than one length is used.

Do Not
Do not install Horizontal trims on horizontal applications where the exterior flange can catch water. Never install vertical application profiles horizontally.

Notes
Please follow siding manufacturer's best practice guides when installing. XtremeTrim® profiles DO NOT form a moisture management system. The architect and builder are responsible for designing and installing a code compliant building envelope. Before installing XtremeTrim® use either a drainable housewrap or a standard housewrap with a rainscreen system if required by code or siding manufacturer.

Tamlyn Best Practice for installing corners
1. Install house wrap - continuous from bottom to top, overlapping as per manufacturer's install method.
2. Install 12" self adhesive membrane tape vertically at both inside and outside corners for additional protection against break down.

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