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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🛠️ Seal smart, save time – the pro’s secret to flawless finishes!

EXTENDED REACH - Generous 20ft length ensures you have enough material for large or multiple projects.
EASY CUSTOMIZATION - Twist multiple strands together to fill wider gaps effortlessly.
SEAMLESS GAP FILLER - Perfectly sized 0.5in diameter to tackle cracks and joints with precision.
VERSATILE APPLICATION - Ideal for pavement cracks, wall joints, foundations, sidewalks, and driveways.
MOISTURE RESISTANT SHIELD - Closed-cell polyethylene construction prevents water absorption and damage.

M-D Products 0.5in x 20ft Backer Rod is a durable, closed-cell polyethylene filler designed to cushion and insulate gaps in pavement cracks, wall joints, foundations, sidewalks, and driveways. Its non-absorbent, gray finish material prevents moisture intrusion and supports professional-grade caulking for long-lasting weatherization.

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Manufacturer	M D Building Products
Part number	71480
Item Weight	9.07 g
Product Dimensions	30.48 x 22.23 x 5.08 cm; 9.07 g
Item model number	71480
Size	20 Ft.
Colour	Gray
Material	Polyethylene
Item Package Quantity	1
Number of Pieces	1
Batteries included?	No
Batteries Required?	No

M-d Products .50in. X 20ft. Backer Rod For Gaps & Joints 71480

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