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Titebond
Titebond WeatherMaster Ultimate MP Sealant

Titebond WeatherMaster Ultimate MP Sealant

4.6· 96 ratings

Best price now

$95.88at Home DepotObserved at 7:07 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

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Our take on the Titebond WeatherMaster Ultimate MP Sealant

Titebond WeatherMaster Ultimate MP is a solvent-free, elastomeric polymer sealant in a 9.5 oz cartridge for exterior sealing. It stays permanently flexible, resists UV and heat up to 225°F, sticks to damp surfaces, and can be painted. One cartridge covers about 29 linear feet. The best new price is $95.88 at Home Depot as of November 4, 2026, with two stores listing it new.

Best forExterior gap and joint sealingSealing around windows, doors and trimMetal, concrete and fiberglass repairsCold-weather or damp-surface application
Pros
  • Permanently flexible, so joints move without cracking
  • UV-resistant and rated to 225°F
  • Adheres to damp surfaces and most building materials
  • Solvent-free, 100% solids formula with no shrinkage
  • Paintable once cured
  • Can be extruded in extreme temperatures
Cons
  • Needs a caulk gun
  • 24-hour cure time
  • No sag resistance, so it can slump in wide overhead gaps
  • 9.5 oz cartridge covers only about 29 linear feet
  • High price per cartridge at $95.88

Titebond WeatherMaster Ultimate MP Sealant prices at every store

  • Home DepotNew

    In stock

    $95.88Observed at 7:07 PM
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  • Lowe'sNew

    Out of stock

    $95.88Observed at 7:07 PM
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Also available at

  • Diamond Tool StoreCheck price at Diamond Tool Store
  • eBayCheck price at eBay
  • Industrial ProductsCheck price at Industrial Products
  • DK HardwareCheck price at DK Hardware

Titebond WeatherMaster Ultimate MP Sealant price history

Lowest price we've seen: $54.00 on Nov 5 at Industrial Products. Tracked across 5 stores since Nov 5.

What reviewers say

Rated 4.6 out of 5 from 96 ratings. Owners report strong adhesion and lasting flexibility on exterior joints. Some note the price and the slow cure.

Pros
  • Holds up through weather and temperature swings
  • Sticks well to damp and hard-to-bond surfaces
  • Paints cleanly without shrinking
Cons
  • Costly compared with basic exterior caulk
  • Takes a full day to cure
  • Can sag in large overhead gaps

Specifications

Form
Sealant
Resistance
UV-resistant
Cure Time
24 hours
Temperature Resistance
Up to 225 degrees f
Product Type
Sealant
Chemical Basis
Polymer
Formula
Superior polymer
Material
Elastomeric superior polymer, 100% Solids
Free Of
Solvent free
Application Location
Exterior
Application Substrate
Most common building materials, Aluminum, Concrete, Copper, Fiberglass
Application Use
Sealing, Sealing gaps
Application Method
Caulk gun
Application Temperature Range
Can be extruded in extreme temperatures
Container Volume
9.5 oz
Container Type
Cartridge
Container Size
9.5-oz
Adhesion
Adheres well to damp surfaces
Coverage
29 linear foot
Flexibility
Permanently flexible
Paintability
Yes
Sag Resistance
No
Shrinkage
No shrinkage

Questions and answers

Is Titebond WeatherMaster Ultimate MP worth the price?
It costs $95.88 at Home Depot as of November 4, 2026, far more than basic exterior caulk. The case is durability: permanent flexibility, UV and heat resistance to 225°F, and no shrinkage. For long-lived exterior joints, that can offset the cost.
How does it compare with standard silicone caulk?
It is a solvent-free elastomeric polymer, not silicone. It bonds to damp surfaces and most building materials, can be painted, and stays flexible. Silicone is usually cheaper but often not paintable and less forgiving on damp surfaces.
How long does it take to cure?
About 24 hours. It can be extruded in extreme temperatures, but let it cure before painting or exposing it to heavy water.
How much does one cartridge cover?
About 29 linear feet from a 9.5 oz cartridge, depending on bead size. Buy extra for long runs or deep gaps.
What surfaces does it stick to?
Most common building materials, including aluminum, concrete, copper and fiberglass. It also adheres to damp surfaces.
When is it cheapest?
The best new price is $95.88 at Home Depot as of November 4, 2026, with two stores listing it new. Watch the price history for drops before larger exterior projects.
Where is the Titebond WeatherMaster Ultimate MP Sealant cheapest?
At Home Depot, for $95.88, as of our latest check.
What do buyers say about the Titebond WeatherMaster Ultimate MP Sealant?
Rated 4.6 out of 5 from 96 ratings.
Where can I buy the Titebond WeatherMaster Ultimate MP Sealant?
6 stores we checked sell it, including Home Depot, Lowe's, Diamond Tool Store, eBay, Industrial Products.