Is it safe to use near hot water baseboard radiators? I want to use it behind radiator cover as a temporary fix for a cold draft.

I suspect it would be safe if between the wall and the top cover of the baseboard, assuming you have standard baseboard covers like mine -- which never get super hot. It's foam, and will likely melt if too close to a heat source. To be on the safe side, I'd suggest first contacting the company directly.

I live in an apartment and i feel a draft coming through the cracks of my window would this help? Im trying to avoid using weather tape

I purchased the medium backer rod and they are 1/2" thick. I think the one I purchased would be too thick to insert into the crack of your windows. Maybe there is a smaller version that would work for you.

What caulking do u need for this ?

I did use caulk as it was used to support a garage door seal as the bottom of the door.

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M-D Building Products 71480 1/2-Inch by 20-Feet Backer Rod,

M-D Building Products 71480 1/2-Inch by 20-Feet Backer Rod,

Product ID: 256128197

Details

Brand
M-D Building
Colour
Gray
Item form
Foam
Item weight
0.02 Pounds
Maximum gap fill
0.5 Inches

💧Waterproof polyethylene foam

📏0.5-inch gap fill precision

🧱20 feet continuous length

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KD 4.54

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Description

🛠️ Seal smart, save energy, and stay cozy all year round!

WATERPROOF DURABLE - Made from resilient polyethylene foam that resists moisture and maintains integrity over time.
SOUNDPROOF YOUR SPACE - Creates a solid backing for caulking, reducing noise infiltration for a quieter environment.
EFFORTLESS INSTALLATION - Flexible and easy-to-use design speeds up your weatherization and sealing tasks.
LONG LASTING 20 FOOT ROLL - Generous length ensures you have enough material for multiple projects without constant reordering.
SEAL EVERY GAP LIKE A PRO - Precisely fills gaps up to 1/2 inch to block drafts and improve insulation.

The M-D Building Products 71480 Backer Rod is a 1/2-inch thick, 20-foot long polyethylene foam rod designed to fill large gaps and openings. Waterproof and durable, it provides a reliable backing for caulking projects, enhancing insulation and soundproofing. Ideal for professional-grade weatherization, it helps prevent drafts and maintain comfortable indoor temperatures.

Specifications

ASIN	B000BQWOC0
Best Sellers Rank	#70,815 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #138 in Raw Building Materials
Brand Name	M-D Building Products
Color	Gray
Customer Reviews	4.6 4.6 out of 5 stars (3,838)
Global Trade Identification Number	00043374714807
Item Form	Foam
Item Type Name	Backer Rod
Item Weight	0.02 Pounds
Manufacturer	M-D Building Products
Material Type	Polyethylene (PE)
Maximum Gap Fill	0.5 Inches
Model	71480
Number of Items	1
Part Number	71480
Surface Recommendation	wall
UPC	043374714807
Unit Count	1.0 Count
Water Resistance Level	Waterproof

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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