Measure
Enter average wall width and height, then the number of similarly sized walls. Complex cabins should be divided into separate wall groups and added together.
Weatherall stain calculator
Plan the right amount. Buy with confidence.
Estimate stainable area, account for log profile and coats, then get a practical purchase recommendation with a built-in material buffer.
TDS product-specific rates
10% planning buffer
Free project review
Stain Coverage Calculator
Estimate how much Weatherall stain your cabin project may require.
Coverage estimates use the midpoint of each product’s published technical-data-sheet first-coat and subsequent-coat ranges. Actual coverage varies with wood species, age, porosity, surface texture, preparation, existing finish, and application technique. Estimates include a 10% material safety factor.
Log Home Stain Comparison Tool
Compare Weatherall UV Guard, UV Guard II, and SuStain against Perma-Chink, Sikkens / PPG ProLuxe, Transformation Log & Timber, and WOODguard systems.
| Attribute | Weatherall UV Guard | Perma-Chink Lifeline Ultra-2 |
|---|
Product information is based on manufacturer literature and product data sheets. Warranty eligibility, coverage, dry times, cure times, maintenance intervals, and performance vary by surface preparation, wood condition, application quality, climate, UV exposure, and moisture. Always confirm current manufacturer instructions before application.
A better project estimate
How the stain calculator works
The calculator starts with wall area, subtracts an average allowance for windows and doors, adjusts for curved log profiles, multiplies by the selected coats and adds a 10% planning buffer. It then converts the estimate into practical 5-gallon and 1-gallon quantities.
Choose the system
Use two color coats plus Advance Clear for UV Guard; two stain coats for UV Guard II; and one or two coats for SuSTAIN or Deck & Fence.
Verify
Porous, weathered, rough-sawn or newly blasted wood can consume more material. Send us photos and measurements if you want the estimate reviewed.
Stain calculator questions
How much area does one gallon of Weatherall stain cover?
The calculator uses product-specific midpoint rates from the current Weatherall technical data sheets and calculates first and subsequent coats separately. Actual coverage changes with wood porosity, texture, preparation, application method and weather conditions.
Why does the calculator adjust for rounded logs?
Rounded and D-log profiles have more surface area than a flat wall with the same width and height. The profile adjustment helps reduce the risk of underestimating material.
How are windows and doors handled?
The calculator subtracts an average of 15 square feet for each opening. Large garage doors, extensive glass or unusually sized openings should be measured separately for a more accurate estimate.
Should I order extra stain?
The result already includes a 10% planning buffer for normal waste, absorption differences and touch-ups. Highly porous or heavily restored wood may require an additional allowance.
Can LCMC check my estimate?
Yes. Send Nick your dimensions, log profile, planned product and a few cabin photos. Project guidance is free and there is no obligation.
Weatherall quantity planning
How much Weatherall stain does your log cabin need?
Estimating stain for a log home is different from measuring ordinary flat siding. Log shape adds surface area, doors and windows reduce it, and rough or weathered wood can absorb more finish than smooth, properly prepared wood. The LCMC Weatherall stain calculator combines those project details with product-specific first-coat and additional-coat coverage rates to give you a practical starting estimate.
The result includes a 10% material allowance, but it is still an estimate. Wood species, porosity, age, preparation, application method and the amount of product absorbed by the surface can change actual coverage.
Measure the stainable walls
Enter the average wall width and height, then select the number of walls. The calculator subtracts an allowance for the windows and doors you enter. For cabins with large gables, additions or walls of very different sizes, calculate those areas separately and combine the quantities.
Select the closest log profile
Flat or square logs have less exposed surface than D-logs, half-round logs or fully rounded profiles. Selecting the closest profile helps account for the extra curvature that a simple length-by-height measurement misses.
Choose the actual Weatherall product
Every finish does not cover at the same rate. The calculator uses separate manufacturer coverage midpoints for the selected Weatherall product and treats the first coat differently from additional coats.
Choose the correct coating system
Weatherall products are calculated individually.
Select the product you actually plan to apply. Switching products after calculating can change both the number of coats and the estimated gallons required.
Weatherall UV Guard
UV Guard is an exterior log-home system using two color coats followed by UV Guard Advance Clear as the protective final topcoat. Calculate the color coats with UV Guard selected, then calculate the clear coat separately with Advance Clear selected.
Weatherall UV Guard II
UV Guard II is a true two-coat exterior stain system. UV Guard Advance Clear can be added as an optional topcoat for additional protection and should be estimated separately when included in the project.
Weatherall SuSTAIN
SuSTAIN is a penetrating oil finish with soap-and-water cleanup. It may be used as a one- or two-coat system depending on the project, wood condition and desired result. Select the coat count you intend to apply.
Deck & Fence, Advance Clear and Log Guard
Weatherall Deck & Fence Finish can be estimated for one or two coats. UV Guard Advance Clear and Log Guard Interior ClearCoat have their own coverage selections, so do not use a stain estimate as a substitute for a clear-coat estimate.
Before ordering
Use the estimate, then confirm the project.
Inspect the wood and confirm the coating system before purchasing. Bare, rough-sawn or heavily weathered logs usually absorb more material than smooth wood or subsequent coats. If an older finish remains, compatibility and preparation matter as much as quantity.
Need a second set of eyes? Send Nick your cabin dimensions, photos and selected Weatherall system. LCMC offers free project guidance for homeowners, cabin builders and contractors. We provide free shipping in the lower 48 states and also ship to Canada.
Calculator questions
What to know before you calculate.
Why is first-coat coverage different from second-coat coverage?
The first coat is applied to more absorbent wood and generally uses more material. After the surface has received a coat, an additional coat typically spreads farther. That is why this calculator uses separate first-coat and subsequent-coat rates instead of multiplying one universal rate.
Should Advance Clear be included as another stain coat?
No. Clear finish is a separate product with its own coverage. Estimate the UV Guard or UV Guard II color coats first, then run another calculation with UV Guard Advance Clear selected if your chosen system includes it.
Does the estimate include waste or extra material?
Yes. The calculator adds a 10% material allowance and rounds the result up to whole gallons. Complex architecture, very porous wood or spray application may require a different allowance.
Can I use the calculator for siding, decks or fences?
Yes, as a planning estimate. Select the nearest surface profile and the correct Weatherall product. For horizontal surfaces or unusually shaped projects, calculate sections separately and contact LCMC if you want help reviewing the result.
Personal project support
Want a second set of eyes?
Send Nick your cabin dimensions, current-condition photos and the finish you are considering. He’ll help confirm the product system, color direction and quantity before you order.
01
Use the tool to build your starting plan.
02
Order samples and verify color on your own wood.
03
Confirm quantities before placing the full order.
