Hi all,
I have a mid 80's detached brick house with concrete tile pitched roof. I only have (shoddily cut) vent holes in the gable end leading to outside vent the soffits don't have vents. I noticed in attic recently during cold spell there was a lot of condensation and droplets were falling onto attic floor on the cold side which doesn't get much of the sun. Insulation in attic is only 200m and I don't have cavity wall insulation sinces it's wood bearing house. Another point to note is my loft hatch isn't insulated so I will get a new one installed in the new year.
I've called a few roofers and getting mixed messages on root cause and solution:
a) Needs re-felting due to webbing exposed that signs it's damaged through wear and tear + option c
b) Improve ventilation with 6 roof tile vents only
c) Improve ventilationwith 6 roof tile vents & circular soffit vents every 1M
d) Improve ventilation with 6 roof tile vents & overfacscia vents
If I opt for the ventilation route only I've read airflow design is key and the lower soffit/fascia vents used for intake should outnumber the exhaust roof tile vents. I'm also worried that the gable end vents might disrupt the airflow from low intake -> high exhaust if I were to get both roof tile vents and soffit/fascia vents. Based in North west UK.
My Questions are:
1) Is re-felt or ventilation the correct solution?
2) Would the gable end vents impact any of the above design options?
3) Which solution for condensation is optimal for my house ?
Many thanks
I have a mid 80's detached brick house with concrete tile pitched roof. I only have (shoddily cut) vent holes in the gable end leading to outside vent the soffits don't have vents. I noticed in attic recently during cold spell there was a lot of condensation and droplets were falling onto attic floor on the cold side which doesn't get much of the sun. Insulation in attic is only 200m and I don't have cavity wall insulation sinces it's wood bearing house. Another point to note is my loft hatch isn't insulated so I will get a new one installed in the new year.
I've called a few roofers and getting mixed messages on root cause and solution:
a) Needs re-felting due to webbing exposed that signs it's damaged through wear and tear + option c
b) Improve ventilation with 6 roof tile vents only
c) Improve ventilationwith 6 roof tile vents & circular soffit vents every 1M
d) Improve ventilation with 6 roof tile vents & overfacscia vents
If I opt for the ventilation route only I've read airflow design is key and the lower soffit/fascia vents used for intake should outnumber the exhaust roof tile vents. I'm also worried that the gable end vents might disrupt the airflow from low intake -> high exhaust if I were to get both roof tile vents and soffit/fascia vents. Based in North west UK.
My Questions are:
1) Is re-felt or ventilation the correct solution?
2) Would the gable end vents impact any of the above design options?
3) Which solution for condensation is optimal for my house ?
Many thanks
