Your Locally Trusted Professionals Sunny Days Roofing & Building Services is a family-run building business based in Caerphilly that has been serving South East Wales for over 12 years. Sunny Days is a one-stop shop that covers all building work, from the ground up to the rooftop and all interior and exterior work; with 3 generations of family members at the heart of the business, you are guaranteed a friendly and reliable service.