WALL AND CEILING
STANDARDS
GYPSUM BOARD 
The purpose of the Quality Assurance
Procedures is to ensure that the work is carried out in accordance with
the contract documents and the AWCC Specification Standards Manual.
Proper on-site inspection during installation many times reveals potential
problem areas or procedures that may produce unsatisfactory results.
Corrective action taken immediately is usually less costly than callbacks
to repair and perhaps rebuild walls and ceilings after the work has been
completed.
A complete understanding of drawings, schedules and specifications is
necessary to conduct proper inspection. If a wall or ceiling assembly is
to meet fire and sound rating requirements, then construction details of
the fire or sound assembly test design must also be known. All walls and
ceilings must be judged by this and other criteria.
Recommended inspection procedures include checklists for on-site
inspection. Not all sections of the AWCC Specification Standards Manual
are included under these recommendations. Only those sections which appear
most frequently in projects have been included to help carry out proper
on-site inspection.
The following checklists for on-site inspection of lathing, furring, steel
stud framing, plaster, stucco, gypsum board and sprayed fireproofing are
aimed at helping prevent problems on the job site.
1. GENERAL
General checking should include the
following:
 | Check materials for conformance to
contract drawings and specifications.
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| Check to assure materials are in
properly labeled bundles and undamaged bags.
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| Verify that materials have been
delivered to job site in original containers with labels intact and
legible.
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| Assure that materials are stored in a
dry area protected from weather and damage by other trades.
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2. LATHING, FURRING AND STEEL STUD
FRAMING
A check should be made of the following
items:
| Materials are non-corrosive, where
exposed to exterior and damp conditions.
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| Stud spacing is as required. Special
reinforcement and heavy gauge studs are provided, if specified.
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| Assure stud size, gauge, spacing and
fastenings conforms to specifications.
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| Studs are set to allow for vertical
movement such as slab deflection, etc., if detailed or specified.
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| Studs are securely anchored to walls
and columns and fastened to securely anchored floor plates or tracks,
as applicable.
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| Stud partitions, locations, layout and
plumbness verified.
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| Channel stiffeners are provided, if
specified.
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| Special field conditions of fastening
and connection are observed for accuracy.
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| Anchorages, blocking, plates, etc.,
required for accessories and other equipment support and fastening are
provided and installed by applicable trades.
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| Ensure that cutouts and openings in
partitions are properly framed.
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| Check size, gauge, spacing and
fastening of suspended plaster ceiling runner and furring channels.
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| Hangers of proper type, size and gauge
are provided for ceilings, and are saddletied, bolted or clipped as
required to safely carry loads.
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| Tie wire material and size for
connection of ceiling channels to runners is provided and properly
tied.
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| Corner beads, control and expansion
devices, screeds, casings, trim and other accessories for plaster are
provided and properly installed, as specified.
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| Framing for all required openings in
partitions provided.
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| Connections and provisions are made at
corners or adjoining surfaces of different materials.
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| Metal lath is of type and gauge
required for spacing; galvanized ties are as required, lapped, and
tied. On paper-backed lath, ensure that wire is to wire and paper is
to paper.
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| Ensure cutouts in partitions are not
oversized.
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| Check access panels are installed, if
specified.
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| Inspection by independent agency is
performed before closing in, if specified.
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3. STUCCO
A check should be made of the following
items.
| Sample of stucco texture and colour
have been approved by the Design Authority.
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| Substrate is in acceptable condition
to receive stucco.
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| Stucco is minimum 200mm (8”) above
grade and minimum 25mm (1”) off roofs and terrace decks.
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| Metal flashing interfacing with the
stucco system is installed according to construction documents.
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| Flashings at penetrations (windows,
etc.) are installed according to construction documents.
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| Window head metal flashing is
installed in accordance with construction documents.
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| Trim accessories, are installed
according to construction documents and specified standards.
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| Sealant at junctures of trim
accessories is installed.
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| Proper material is used for basecoat
of stucco.
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| Mixtures of basecoats are according to
construction documents and specified standards.
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| Ambient temperature 4°C or higher at
time of application.
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| Application of basecoats is according
to requirements and specified standards.
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| Basecoat thickness over lath is
according to construction documents and specified standards.
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| Basecoat thickness over concrete block
is according to construction documents and specified standards.
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| Basecoat thickness over concrete is
according to construction documents and specified standard.
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| Moist-curing of basecoat is according
to construction documents. (48 hours after set of basecoat if
temperature is above 25°C.
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| Curing time period of basecoat before
finish is minimum of 7 days.
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| Finish coat - check the type used.
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| Measure spacing of hangers, channels
and/or studs for stucco soffits to see that they are within allowable
limits.
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