Because our attic is very shallow it was impossible to add insulation from the one access door. While a rotten section of the roof was to be removed our roofer coordinated with Allweather to have their people ready to install insulation before the space was again enclosed. Everything worked wonderfully. Allweather's men showed up on time, quickly completed their work and the re-roofing went on. Our cost was so low because we took advantage of a city assistance program. The city paid the rest of the total cost. Total: $272.16 City:$217.73 We paid:$54.43.