I have just had a new back door fitted, I am pleased with the work, but there is a small hole between it and the wall/skirting board. I can feel quite a strong blast of cold air coming through, so it would be great to get that sealed. What kind of material would be best to fill it with? It is quite a deep hole. I think the fitter attempted to fill it, but the material he used collapsed inside the hole. Considering asking the fitter to come back and do it, but not sure if that would be fair.
https://drive.google.com/file/d/166Lj4wFmt8MDMegtaC40xBJkfqfdtV2_/view?usp=sharing
https://drive.google.com/file/d/166Lj4wFmt8MDMegtaC40xBJkfqfdtV2_/view?usp=sharing
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