Building Construction Handbook, Eighth Edition

lap

margin

underside of deep profiles

filled with filler piece or

bedded in cm.mt. on eaves

course of plain tiles

margin = gauge

=tile length — lap

fascia

ventilation

gap

soffit

board

cavity insulation

external wall with thermal

blockwork inner leaf

100 × 50 wall plate

vapour check

plasterboard

(see Note 1, p. 433)

insulation

ceiling joists

ventilation spacer

rafters

EAVES DETAIL

Hips † can be finished with a half round tile as a capping as shown

for double lap tiling on page 437.

Valleys † these can be finished by using special valley trough tiles

or with a lead lined gutter † see manufacturer's data.

Single Lap Tiling