Installation

How to Install SpiderLath:

A Step-by-Step Guide

Installing SpiderLath is quick and straightforward, whether you’re working on stucco, or stone veneer. Follow these easy steps to ensure a smooth installation process, ensuring the durability and performance that SpiderLath is known for.

Installation Instructions

Step 1:

Measure the wall area and cut to the desired length.

A new or sharp box blade/utility knife works best.

Step 2:

Secure one end and pull tight ensuring no wrinkles overlap all edges 2”

Step 3:

Fasten every 6” vertically into studs through foam self-furring strips. If you have any loose areas, you may need to use a slap stapler to secure these areas. **Roofing nails are not acceptable fasteners, see fastener guide below.

Step 4:

Prepare mortar to proper the consistency.

Step 5:

Spread mortar correctly onto SpiderLath 1/4” behind the lath, and 1/4” on top of the lath. Be sure to press mortar firmly through lath openings.

Step 6:

When the mortar is thumbprint hard, scratch the surface with a scarifier or 1/8” notched trowel. For best results allow scratch coat to set up for 24 hours.

Limitations

Weight of veneer stone or exterior cladding must be under 15 pounds per square foot.

Do not install overhead.

Do not use roofing or sheetrock nails unless they are used with the recommended washer and are the necessary length.

Installation Guidelines

SpiderLath is designed to be used in cementitious exterior walls and should be installed in accordance to ASTM C 1780 and ASTM C 1787.

SpiderLath should be applied over a code approved moisture barrier.

SpiderLath is designed to be installed horizontally with the standoff strips against the substrate to create a void that is to be filled with a ¼ in. mortar scratch coat.

SpiderLath is to be overlapped a minimum of 2 in. vertically and horizontally. Do not end at corners, it should overlap and extend around the corner to the next stud.

Fasteners

Fasten edges every 6 in.

Fasten every 6 in. vertically and every 16 in. horizontally into stud where applicable.

Any fastener should be wide enough to grab at least 3 strands of the SpiderLath.

Fasteners should penetrate substrate / stud / CMU minimum ¾ in.

Wood Studs – Optional fasteners include:

Corrosion resistant wide crown staples minimum 1in. crown width.
Screws or nails used with corrosion resistant 1 ¼ in. washer.

Metal Studs

Use No. 7 Type S self tapping screw with a 1 ¼ in. corrosion resistant washer.

Concrete or Concrete Masonry Units

Use masonry fastener or powder actuated fastener with 1 ¼ in. corrosion resistant washer.

ICF’s

Screws with corrosion resistant 1 ¼ in. washer.

Innovative Solutions for a Range of Applications

Stucco & Plaster

Manufactured & Natural Thin Stone

Decorative Concrete

Flooring Overlays & Underlayments

Pool & Patio

Countertops

Artisan Projects

Indoor & Outdoor Fireplaces

Shower Surrounds

Whether you’re working on a residential jobsite, an artisan project, or a large-scale commercial jobsite, SpiderLath’s versatility makes it the perfect solution for applying masonry finishes over new and existing surfaces.

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