Meta description: Learn what Sashco Through the Roof! roof sealant does, how to estimate gallon coverage, prepare a roof, apply the product, and choose the right size.
A gallon of Through the Roof! is a brush-grade, clear roof sealant made by Sashco for sealing leaks and vulnerable roof details. It is designed to remain flexible and adhere to common roofing materials, making it useful for targeted repairs around seams, vents, flashing, and similar areas. The right application depends on the roof surface, the size of the repair, and the product’s current label instructions. Knowing how to estimate coverage and prepare the area can help prevent wasted material and ineffective repairs.
What Is Through the Roof! Roof Sealant?
Through the Roof! is a roof repair sealant sold in several package sizes, including a gallon container. Unlike a conventional roof coating intended to cover a broad roof surface, the gallon product is generally used as a brush-applied sealant for localized repairs and details. The product is clear, so it can be a useful option when a dark or colored patch would be conspicuous.
The manufacturer describes the formula as flexible and suitable for use on a range of roofing materials. It is intended to seal areas where water may enter, such as roof joints and penetrations. Compatibility can vary by surface and condition, however, so the package label and current Sashco product information should be checked before application.
Through the Roof! is not a replacement for every type of roof repair. It cannot correct a failing roof structure, widespread shingle deterioration, loose or improperly installed flashing, or water damage inside an attic. A sealant may address a small entry point, but persistent leaks often require repair or replacement of the underlying roofing component.
Common Uses for a Gallon of Through the Roof!
The gallon size is useful when a repair involves several details or a larger area than a single small tube can reasonably cover. Common applications include sealing around roof vents, plumbing stacks, chimneys, skylights, flashing, and joints in compatible roofing materials. It may also be used to address small cracks or gaps where the product label permits.
- Flashing and joints: Seal small gaps around flashing edges or roof transitions, provided the flashing is sound and properly secured.
- Roof penetrations: Apply around vents, pipes, and other openings where water can collect or enter.
- Localized cracks: Fill or bridge small cracks on compatible surfaces, following the stated application thickness.
- Targeted maintenance: Treat several vulnerable spots during one maintenance visit rather than opening multiple small packages.
These are examples, not blanket approval for every roof. Check the product label for accepted substrates and exclusions. For example, a roof surface may have coatings, oils, dirt, or an existing repair compound that affects adhesion. A small test area can help identify a compatibility problem before a larger application.
How Much Area Does One Gallon Cover?
Coverage depends on how thickly the sealant is applied, the roughness and porosity of the surface, and the amount needed to bridge gaps. As a result, a gallon does not have one reliable square-foot coverage figure for every repair. The manufacturer’s current label or technical data sheet is the best source for its stated coverage and application guidance.
For a localized repair, estimating by the number and size of seams or details is often more useful than treating the product like paint. A thin, smooth seam may use much less material than a rough, uneven joint that needs filling. Applying extra product does not necessarily improve a repair; the sealant must contact a suitable, clean surface and be applied as directed.
Before buying, measure the approximate length and width of the repair area and note whether the roof has gaps or surface texture. Compare that estimate with the product’s coverage information. If the repair is small, a smaller package may be more economical. If several areas need attention, a gallon can reduce repeated trips and packaging, provided the product will be used within its storage life.
How to Apply Through the Roof! Gallon
Inspect and prepare the roof
First, identify the source of the leak rather than sealing only the stain visible indoors. Water can travel along rafters, roof decking, or other surfaces before it appears in a room. Inspect the exterior roof area, flashing, nearby penetrations, and attic when it is safe to do so. If the roof is steep, wet, fragile, or difficult to access, a qualified roofing professional is the safer choice.
Remove loose debris and any material that would prevent adhesion. The surface should be prepared as directed by Sashco, including any requirements for dryness or cleaning. Although the product is marketed for demanding roof conditions, that does not mean every wet, dirty, icy, or contaminated surface is suitable. Do not assume it can be applied in rain or outside the temperature limits on the label.
Apply the sealant carefully
Stir or otherwise prepare the product only as instructed on its container. Use a suitable brush to work the sealant onto the repair area, pressing it into the seam or joint without spreading it beyond the intended location. Follow the manufacturer’s guidance on thickness, overlap, and whether additional coats are recommended. Avoid blocking drainage paths or covering roof features that need to move or remain open.
Use gloves and eye protection, and review the product’s safety information before starting. Keep the container closed when it is not in use. Clean tools and dispose of leftover material according to the label and local requirements rather than washing product into a storm drain.
Allow the repair to cure
Drying and curing time varies with temperature, humidity, airflow, and application thickness. Protect the repair from conditions that could disrupt it, and follow the label’s guidance on exposure to rain or foot traffic. A surface that feels dry may not be fully cured. If a leak continues after the sealant has had the recommended time to cure, the underlying issue may be larger than a surface gap.
Important Roof and Weather Considerations
Roof work carries fall risks, even on a one-story home. Use a stable ladder on firm ground, keep three points of contact while climbing, and do not work on a wet, frosty, or windy roof. The U.S. Consumer Product Safety Commission and the Occupational Safety and Health Administration offer ladder and fall-prevention guidance; homeowners should avoid roof access when conditions or the roof’s condition make it unsafe.
Weather matters for both safety and sealant performance. Check the product label for application temperature, surface conditions, and rain exposure. A forecast that looks clear for a few hours may not provide enough time if the material needs longer protection. In cold weather, material can become harder to spread; in high heat, it may behave differently and cure more quickly at the surface.
Roof type also matters. Asphalt shingles, metal, tile, and membrane systems differ in how they handle movement and repairs. A product described as versatile is not automatically appropriate for every roof assembly. For a manufacturer’s product-specific information, consult the Through the Roof! page and the container label. For a roof under warranty, check the warranty terms or ask the roofing manufacturer before applying an unapproved repair material.
Through the Roof! Gallon Compared With Smaller Sizes
| Package choice | Best suited to | Considerations |
|---|---|---|
| Small tube | A minor, isolated seam or penetration repair | Easy to handle and store; may be less practical for multiple repairs. |
| Gallon container | Several repair details or a larger brush-applied area | Requires a brush and careful resealing; buy only what can be used appropriately. |
| Larger container | Repeated maintenance or multiple substantial repair areas | May reduce unit cost, but leftover product needs proper storage and may eventually expire. |
Package availability and sizes can change, and retailers may describe the product differently. Compare the exact product name, package size, intended application, and label directions before ordering. A gallon container of brush-grade sealant should not be confused with a roof coating or a different product with a similar name.
Buying Tips for Through the Roof! Gallon
- Confirm the product: Look for Sashco Through the Roof! and verify that the listing is for the gallon size and the intended brush-grade formula.
- Check the label: Review compatible surfaces, application conditions, coverage guidance, safety directions, and storage instructions.
- Inspect the container: Avoid damaged, leaking, or poorly sealed packaging. Check the date or lot information when available.
- Compare total cost: Consider shipping, the needed brush, and the amount likely to remain after the repair—not just the advertised price.
- Consider the repair scope: Several small spots may suit a gallon; one tiny seam may not justify it.
Online retailer descriptions can be incomplete or outdated. When a listing conflicts with the manufacturer’s instructions, the product label and current manufacturer information should take priority. Homeowners should also check return policies, especially when buying a specialized sealant that may not be returnable once opened.
Storage and Cleanup
Keep unused product in its original container, tightly sealed, and stored as directed by the manufacturer. Protect it from freezing, excessive heat, and direct sun if the label calls for those precautions. Do not store it where children or pets can reach it. Before the next use, inspect the material for changes in texture, separation, or other signs that it may no longer be usable; follow the manufacturer’s instructions rather than trying to restore questionable product.
Clean brushes and other tools using only the method specified on the label. The appropriate cleanup method can depend on the product formula, and household assumptions may damage tools or create a safety risk. Dispose of empty packaging and leftover sealant according to local rules. Do not pour roofing products into sinks, gutters, or storm drains.
When a Sealant Is Not Enough
A roof leak that returns, spreads, or appears in multiple rooms may indicate a broader problem. Damaged shingles, corroded metal, failed flashing, deteriorated underlayment, blocked drainage, or structural movement may need professional repair. Repeatedly covering the same location can hide deterioration and delay a lasting fix.
Interior water stains, sagging ceilings, wet insulation, or visible mold also warrant prompt attention. A roofer can inspect the roof assembly and distinguish a small sealable gap from a repair that requires replacing material. For homes with significant water intrusion, an inspection can help identify damage that is not visible from the ground.
Frequently Asked Questions
Is Through the Roof! gallon clear?
The product is marketed as a clear roof sealant. Confirm the appearance and any product variation on the specific container or manufacturer page before purchase, since product lines and packaging can change.
Can it be applied to a wet roof?
Do not rely on a general claim that a product can handle moisture as permission to apply it to any wet surface. Follow the label’s specific surface-condition and weather requirements. A wet roof can also be dangerously slippery.
Can it fix any roof leak?
No. It can seal certain localized gaps on compatible surfaces, but it cannot restore a damaged roof structure or replace failed roofing components. A persistent or extensive leak should be inspected.
Is a gallon the right size for one repair?
That depends on the repair’s size and the amount of product required. A gallon is often more practical for multiple details or a larger brush application, while a small package may be sufficient for one minor spot. Check the manufacturer’s coverage information before deciding.