
Best Materials for Exterior Painting in Star
Explore the most popular material options for exterior painting in Star, with pricing, durability, and style comparisons to help you choose.
Quick answer
Yes. Power washing removes dirt, mildew, chalking paint, and debris that would prevent new paint from adhering properly. We power wash all exterior surfaces before scraping, sanding, and priming.
Star, ID · Exterior Painting
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Paint product selection for Star exteriors is non-negotiable at the premium tier — the UV exposure and temperature cycling in this environment will reveal the performance difference between good paint and great paint faster than any sheltered Treasure Valley location. The minimum specification Iron Crest Remodel uses for all Star exterior projects is 100% acrylic latex in the ultra-premium tier: Sherwin-Williams Emerald Exterior, Benjamin Moore Aura Exterior, or Behr Dynasty Exterior are the products with the UV resistance, elasticity, and adhesion required for Star's conditions. These products cost $65–$85 per gallon versus $35–$50 for mid-tier alternatives, but the performance differential over the 10–15 year life of the project is decisive. Ultra-premium exterior paints in Star last 3–5 years longer than mid-tier products under equivalent conditions — the per-year cost of the premium investment is actually lower. For dark colors — the charcoal, slate, and deep navy tones that are currently popular for Star exterior transformations — a special heat-reflective formulation is important on south and west elevations. Dark paints absorb significantly more solar heat than light colors, and in Star's direct-sun environment this can drive siding surface temperatures above the material limits for some substrates. Sherwin-Williams Emerald and similar products offer heat-reflective pigment technology in their dark color formulations that reduces surface temperature by 30–40°F under direct sun while maintaining the deep, saturated color appearance. Caulking quality matters as much as paint quality for Star exteriors. The caulk at all trim joints, window perimeters, door frames, and penetrations is the primary defense against moisture intrusion, and it is the first material to fail under Star's UV and temperature cycling conditions. We specify Sherwin-Williams Duration or equivalent paintable urethane caulk at all exterior joints — products with 50-year warranty claims that are specifically formulated to remain flexible across the temperature range Star homes experience. Builder-grade silicone or low-quality latex caulk at these joints is a systemic failure point that allows moisture behind the paint film and ultimately behind the siding.

Choosing the right materials is one of the most important decisions in any exterior painting project. The materials you select affect the look, durability, maintenance requirements, and overall cost of the finished project. Here is a detailed look at the most popular material options for exterior painting in Star and the Treasure Valley.
These are the most commonly used materials for exterior painting projects in Star. Each has different characteristics that affect cost, durability, and style:

Sherwin-Williams Duration Exterior
$65–$85 per gallonA premium 100% acrylic exterior paint with exceptional durability, color retention, and mildew resistance. Self-priming on previously painted surfaces. Rated for extreme weather exposure.
Best for: Siding and large exterior surfaces that need maximum weather resistance

Benjamin Moore Aura Exterior
$70–$90 per gallonA top-tier exterior paint with ColorLock technology for fade resistance. Excellent adhesion and flexibility that resists cracking in temperature extremes. Low-VOC formula.
Best for: South- and west-facing walls that receive intense Boise sun exposure

Sherwin-Williams SuperDeck Stain
$45–$65 per gallonA high-performance deck and fence stain available in semi-transparent and solid formulas. Provides UV protection, water resistance, and mildew resistance for horizontal wood surfaces.
Best for: Wood decks, fences, pergolas, and horizontal wood surfaces

Exterior Caulk — DAP Dynaflex Ultra or OSI Quad
$6–$12 per tubePremium exterior caulking that remains flexible in Idaho's temperature extremes. Paintable, waterproof, and designed for long-term adhesion to wood, fiber cement, and vinyl surfaces.
Best for: Trim joints, window frames, siding gaps, and penetration sealing

Exterior Primer — Zinsser Cover Stain or Kilz Original
$30–$50 per gallonOil-based or shellac-based primers for blocking stains, tannin bleed on cedar, and ensuring adhesion on bare or weathered wood. Critical for long-lasting exterior paint adhesion.
Best for: Bare wood, cedar trim, stain-blocking, and tannin-prone surfaces

Star shares the Treasure Valley climate. Open terrain and rural-edge location mean more wind and UV exposure.
Wind and Open Exposure
Higher wind loads and more UV exposure than sheltered locations. Durable exterior materials are important.
New Construction Settling
Homes 3-7 years old may show minor settling cracks in drywall — cosmetic and common in new construction on Treasure Valley soils.
In Star, the combination of dry summers, cold winters, and variable humidity levels means that material selection should prioritize durability and climate resistance. We recommend choosing materials rated for the temperature extremes and moisture conditions typical of Ada County.
Material availability affects both timeline and cost. Standard materials are typically available within 1-2 weeks from local suppliers in Star. Custom or specialty materials may have lead times of 4-14 weeks. We recommend selecting materials early in the design phase to avoid schedule delays.
Typical lead times
- ● Standard/stock materials: 1-2 weeks
- ● Semi-custom orders: 3-6 weeks
- ● Full custom/specialty items: 6-14 weeks
- ● Imported or artisan materials: 8-16+ weeks
Local factors — Star's housing stock and typical construction eras, the climate conditions that drive material and scheduling choices, and permitting through City of Star Building Department — are covered in full on our Star page for this service, alongside 5 common project types.
Exterior Painting in Star: housing stock, climate & permits →Do I need to power wash before painting?
Yes. Power washing removes dirt, mildew, chalking paint, and debris that would prevent new paint from adhering properly. We power wash all exterior surfaces before scraping, sanding, and priming.
How many coats of paint do you apply?
We apply two coats of premium exterior paint over properly prepped and primed surfaces. Bare wood areas receive a coat of primer plus two finish coats. Two coats ensure proper mil thickness, UV protection, and long-term durability.
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