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 - Versatile Gray Foam Backer Rod Set 1/2in x 20ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71480)

Product ID: 4877844

Details

Brand
M-D Building
Color
Gray
Item Form
Specialty
Item Weight
0.02 Pounds
Maximum Gap Fill
0.5 Inches

🧱0.5in max gap fill

✂️easy trim-to-fit design

🌦️weather-resistant durability

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Description

🛠️ Seal smarter, save energy, and upgrade your space with ease!

SEAL LIKE A PRO - Effortlessly fills and seals medium concrete gaps up to 1/2 inch for a flawless finish.
VERSATILE HOME HERO - Ideal for expansion joints, window sills, roofs, and more—your all-in-one sealing solution.
CUSTOM FIT ZERO FUSS - Trim or twist to size with scissors for a perfect, snug fit every time.
DRAFT PROOF YOUR DOMAIN - Blocks drafts and dust, enhancing home comfort and energy efficiency.
BUILT TO BRAVE THE ELEMENTS - Crafted from premium weather-resistant foam that stands strong rain or shine.

The M-D Building Products Versatile Gray Foam Backer Rod Set (1/2in x 20ft) is a waterproof, weather-resistant foam rod designed to fill and seal medium gaps in concrete, expansion joints, and cracks. Lightweight and easy to install, it provides a durable base for caulking, improves airtightness, and enhances insulation for both indoor and outdoor applications.

Specifications

ASIN	B000BQWOC0
Best Sellers Rank	#1,639 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #16 in Weather Stripping
Brand Name	M-D Building Products
Color	Gray
Customer Reviews	4.6 4.6 out of 5 stars (3,950)
Global Trade Identification Number	00043374714807
Included Components	1 Foam Backer Rod Roll
Item Form	Specialty
Item Type Name	Backer Rod
Item Weight	0.02 Pounds
Manufacturer	M-D Building Products
Material Type	Foam
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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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

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