Do you need to repair hairline cracks in stucco?

Stucco is a cement-based siding that can easily crack that soaks in water and cause water intrusion. Repairing hairline stucco cracks is important for regular home maintenance. However, other types of stucco cracks may require professional repairs.

Can hairline cracks in stucco cause leaks?

#5 Depth of crack

Note that in a Traditional hard coat stucco, most hairline cracks only penetrate the finish coat, and not through the scratch coat or brown coat, thus they do not usually leak.

Can you paint over hairline cracks in stucco?

Hairline cracks are anywhere from 1/16 of an inch to 1/8 of an inch wide (typically) and are easily and effectively repaired using caulking and paint, in most cases because it is the most economical approach for most people.

How often should stucco be sealed?

If new, stucco can be sealed with a clear concrete/ masonry sealer, which will penetrate into the stucco and stop moisture entrance. These are typically silicone type sealers. While effective, these finishes will usually need to be redone every 4-5 years.

Can you stucco over caulking?

Silicone Caulking: Silicone is not really recommended because it is so hard to work with and cleanup is a much harder process. It doesn't stick to materials like a polyurethane will and it will not work well to blend into the stucco finish.

Repairing hairline cracks on Stucco with Loxon Polyurethane Sealant

Why you should not paint stucco?

Stucco needs to breath – One of the main reasons you shouldn't coat your stucco with paint is because stucco is porous. This allows moisture that hits the surface to easily evaporate away. A coat of paint can harm that breathability.

How much does it cost to repair cracks in stucco?

Labor. Stucco repair pros charge $40 to $50 per hour on average to fix damaged stucco siding, whether that's filling in a small crack on a single wall or tackling the whole exterior. If your pro charges by the square foot, the cost is approximately $60 to $120 per square foot.

How much stucco cracking is normal?

Hairline Cracks – Typical stucco cracks that require normal maintenance are hairline cracks less than 1/8 of an inch. These cracks can be stair-stepping on concrete block homes and that's completely fine.

What is considered a hairline crack?

Hairline cracks are commonly observed in freshly placed concrete and their occurrence is owed to the phenomenon of plastic shrinkage. As the name implies, these cracks are very small- about 0.003 inches (0.08mm) in width and can be very shallow.

What do vertical cracks in stucco mean?

Stucco shrinks as it hardens and gains strength. This shrinkage, results in micro cracking and hairline cracks. These cracks are usually less than 1/16 of an inch wide, with many being so thin that the naked eye may not be able to see them.

How do you fill cracks in stucco before painting?

Clean the edges of the crack with a wire brush to remove any debris. Then, using a sand-textured acrylic caulk, fill in the crack from top to bottom using a trowel to smooth it out as you go. Allow the material to cure for at least 24 hours before painting with a water-based paint.

Can stucco cracks cause water damage?

Cracks and holes in the stucco exterior can allow moisture to penetrate the material, leaving it at risk for water damage like mold growth and dry rot. Just like interior water damage, exterior water damage should be addressed immediately to prevent long term problems.

When should stucco be replaced?

Stucco is a very durable finish material with a typical life span of 50-80 years or more. Although it is one of the most durable surfaces available, it also features the lowest annual maintenance cost when compared to other siding materials. Stucco is a natural material consisting of an aggregate, a binder, and water.

How much does it cost to recoat stucco?

Recoat: A basic recoat costs between $3 and $6 per square foot, depending on the condition, type and texture of your walls. For a large repair, you may need a pro to recoat the stucco on a large portion of the house to make the patch color match everything else, as well as seal out moisture.

Should you power wash stucco?

Yes, you can use a power washer or pressure washer to clean stucco. Just make sure to maintain a good distance between the nozzle and the surface, use the 1,500 PSI, and a 25- or 40-degree nozzle. Although, given the intensity of a power washer, seeking the help of a professional is always best.

Is it better to paint stucco or re stucco?

While stucco is a very durable surface, it will need to be repainted periodically – but not often. Proper application using high-quality paint can help your stucco last over 20 years without peeling or blistering, but its longevity also depends on environmental factors.

Is it better to re stucco or paint house?

Stucco is a durable and great-looking exterior finish, but it isn't invincible. Ideally, stucco should be painted every five to ten years. It's important to paint and perform other stucco maintenance on the right schedule to keep your home looking great and to prevent hairline cracks from growing larger.

What is the best product to seal stucco cracks?

Mor-Flexx Stucco & Mortar Sealant

Mor-Flexx is one of the most powerful stucco crack repair products. Most of the other stucco repair products dry hard, become brittle and prone to re-cracking. Mor-Flexx when dried is still stretchable and flexible. It provides long-lasting seal.

Should you caulk between stucco and trim?

You need to caulk between your stucco and trim to prevent moisture from getting between the two building materials. Otherwise you will experience rot and decay problems, especially if you have wood beneath your stucco.

What causes stucco cracks?

Though cracks in stucco can occur due to different factors, including wrong mix proportions, insufficient mixing, poor workmanship, seismic movement and seasonal changes, two leading causes of cracks in stucco are the house settling process and shrinkage-induced stresses, which typically occur during the drying period.

Does stucco need maintenance?

Stucco isn't delicate. Whether applied as exterior siding or as a finish for interior walls, the age-old material requires little in the way of ongoing maintenance. Occasional cleaning or patching may be necessary, but with the right combination of products and tools, any homeowner can get the job done.

Does stucco need a sealer?

Sealing your stucco is a great way to prevent water absorption. New stucco should be sealed with a clear concrete masonry sealer, typically made of a silicone material. For older stucco that's already showing signs of cracking, waterproof elastomeric paints are an excellent choice to preserve and protect your stucco.