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Date Posted: 19:29:16 01/01/08 Tue
Author: 何焯華條賓周+歡迎炸佢: jameslam@hkpro.com.hk
Author Host/IP: ics8o.polyu.edu.hk / 158.132.12.81
Subject:

淨屌何焯華條仆街呢+歡迎炸佢: nancychow@hkpro.com.hk
In reply to: 何焯華條賓周+歡迎炸佢: jameslam@hkpro.com.hk 's message, "淨屌何焯華條仆街呢+歡迎炸佢: nancychow@hkpro.com.hk" on 17:35:21 12/18/07 Tue

General

1. The 'Roofing System' shall mean a roofing system or different roofing systems for
different parts of a building or for different buildings and shall be construed as comprising the selection, supply and laying of proprietary roof membranes, protective layers, insulation, adhesive, any screed or finishing layers to the structural roof deck or slab together with all flashin 郎 , joints around pipes, junctions, surrounds, colI 訂 s, funnels, rain water outlets and the like including priming, sealing, crack filling and other preparation where necessary.

2. Further to General Specification for Building Clause 12.99, the list of Approved
Specialist Roofing Materials Contractors is at Annex A to 也 is Particular Specification.

3.

(i) The Contractor shall supply and lay to each roof of the buildings one of the approved specialist roofing systems and approved compatible insulation materials which in connection with the existing roofing will ensure a sound and watertight roof to comply with the standards and specification of the roofing systems 臼 amplified by the requirements below.

(ii) All acceptable specialist roofing covering materials when applied by an authorized
applicator s4..all be approved in writing by the Maintenance Surveyor.

Materials

4. Further to General Specification for Building Clause 12.100, the list of types of approved
specialist's roofing system is 剖 Annex B to 也 is Particular Specification.
Clearance of debris

5. Cleanliness as specified in the GS. shall be amplified as follows :-
Rubbish chutes may be used to lower debris to ground level provided that :-
(i) they are designed to withstand high winds on exposed sites;
(ii) they have hopper heads to ensure that no materials fall outside the chutes; (iii) they discharge at a low level to prevent the spread of debris over a large 訂 ea; (iv) debris is sprinkled wi 也 water to prevent undue dust;
(v) debris is regularly removed 企 om site; and
(vi) the rubbish chutes 訂 e to be taken down and removed off site after use and all
disturbed areas made good to match the existing.

Scope of work
6. The scope of work shall include all labour, materials, equipment, fabrication,
transportation, assembly and protection necess 訂 y to provide complete construction and
installation of protected single ply sheet roofing or liquid system as specified, and 泊
accordance and in compliance wi 也 the Specification, drawings, instructions and Works Orders by the Maintenance Surveyor.

Particular Specification PS.l1

Free of moisture

7 The Contractor shall ensure 也 at moisture is not en 甘 apped between the existing roof
finish or asphalt, and the proposed Roofing System.

Precaution

8. The Con 甘 actor shall ensure that all works shall be carried out in a safe and worlananlike
manner causing the minimum of inconvenience to the occupants. No debris or objects of any kind, shall be thrown, or allowed to fall 企 om 也 e rooftop or external walls. All rubbish shall be lowered by mechanical platform hoist, continuous refuse chute system discharging into a skip or bunker at ground level, or other method approved by the Maintenance Surveyor. Provide effective measures to reduce dust nuisance to a minimum. Due reg 訂 d shall be given to safety measures throughout the entire contract period.
Storage and handling of materials and debris
9. Roofing materials shall not be held in storage areas or on site for longer than is necessary
in respect of any particular operation. All vehicle _move_ent and parking _hall !'e approved. The method and routes of movement or ma!erials on the roof is _o . be approved by Maintenance Surveyor and _ c__ sh_ll !:>e t_en not_ t<:>_ _damag_ existing finishes. VYhere applicable only approved rubber tired appliances shall be used.

Laving procedure

10. Apply or lay the Roofing System (inc1u__ing_ inter ali_a, _th.e _ propFietary roo.fi_g
membranes, protective layers, insulation, adhesive, screed, [mishing layers, etc.) in accordance with the manufacturers' specifications and recommendations. Particular care shall be taken to ensure that all junctions, joints, details such as skirtings, covering to kerbs, blocks and plin 血仇 edges, plant b 泌的 , expansion joints, etc. and joints around pipes, rainwater outlets, gutters, surrounds, outlets and the like are properly executed.
Flashing to p 訂 apet walls, plant bases, concrete plinths and the like shall be formed at a minimum height of 150mm above finished roof level including cutting new grooves, at a higher level than the existing, for tucking in.

Cut grooves at all skirtings for tucking in the waterproofing material and for providing a neat joint between existing finishes including making good as necess 訂 y.

Roofing material
11. The roofing material shall be laid onto the base layer, which _may be either the cem__t
screed or the insulation depending upon the Contractor's specification and detailing, with the proper type and amount of adhesive suitable_ for the_b_e laye! and with sufficient lap joints at all edges as recommended by the manufacturer's instructions.

Insulation

12. (i) The Roofmg System including any nec_s_ 訂 y protection, together with 個 y of the existing roofmg materials not removed shall provide insulation properties which 訂 e not less than those provided in the original roofmg system.
(ii) Where ordered by the Maintenan_e S_uryeyor_ t_e _on 甘 actor shall submit a detailed specification of - the proposed insulation,_. includi__ the calc_.llation of thermal resistance and streI).gth to show its compliance with the requirements set out in Clause 12(i) for approval by the Maintenance Surveyor.

-PS.1112

Particular 8Decification PS.l1

Flashing and i oints
13. To ensure a watertight roo_: the Con 甘 actor shall, where necessary, replace all defective
flashing, overflashing, capping, etc., as directed on site.
Fall 司 rainwater outlets etc.
14. The Con 仕 actor shall ensure 也 at adequate falls to all p 訂 ts of the roof, including all
surface channels, etc. are maintained. 百 le Contractor shall, where necess 訂 y, recti 今 or modify the existing fall, and any works required to the rainwater outlets as -directed ort SIte.

Traffic on roof

15. D<? not all<?w tra_c o_ r_ofs unti! 4 _daJ:'s after completion of the Roofing System and
subsequently permit only light traffic for further 10 days.

Pipe supports
16. __?tec_ _ll piJ2ework,ducting .and other services running on top of the existing roofs.
All existing pipe suppo 口 s resting on the roofs shall be removed- and replaced WIth new _nes _to _an ap_pr?ve_ standard. PVC sleeves shall be provided' for Plpework to pass loosely through the sleeves.
Non-destructive Test

17. Fur 也 e_ t__ General Specifi_ati0l! (or BuiJdin_g.Clau_se 12.117, the Contractor shall employ
a specialist contractor selected 企 om the List of Non-des 甘 uctive Test Specialists for Roofi!lg S ):'s!ems a! Annex C to this Particular Specification to carry out -the in 企 a-red scanning of the roofing membrane.
18. In the event of failure, car 乃 , out, at the Con 甘 _ctor's expense, repairs and subsequent
infra-red scanning tests until the roof is shown to be watertight.

E-MTC2005-PS.I1-00-0

- PS.ll/3

Annex A to PS.ll

LIST OF APPROVED SPECIALIST ROOFING MATERIALS CONTRACTORS

1. The Roofing System works shall be cons 甘 ucted by one of the firms included as Agent or Applicators in the following List of Specialist Roofing Materials Contractors (Group ﹒ Full List) maintained by the APB Technical Information Committee under the Architectural Services Department Technical Information Committee. 百 le List is subj ect to change, and therefore the Con 甘 actor shall check with the Architectural Services Department Technical Information Committee and submit the proposed system for approval by the Maintenance Surveyor before car τ )'lng out any Roofing System works.

2. List of Specialist Roofing Materials Contractors for Roofing System comprising Type “ Al"
Roofmg sheet Materials requiring protection:

APB Ref. ASD.PB Product 企 gent

Applicator

ν M 81011 0 1 Bituthene WR Grace (HK) Ltd.
3000

Vai Cheong Building Works Co., Ltd. Way Lo Engineering Co., Ltd.

LIM 810/221 Marleytorch Barinco (HK) Ltd.
(300S)

Barinco (HK) Ltd.

ν M 810/615

Soprema

Wo Loong Engineering & Construction Ltd. Wo Loong Engineering & Construction
Ltd.

ν M 810/625

Shelterbit (Sand Ardex Hong Kong Ltd. Finish)

Hancrete Engineering Co., Ltd. Ardex Hong Kong Ltd.

ν M 810/626

Shelterseal

Ardex Hong Kong Ltd.

Hancrete Engineering Co., Ltd.

ν M 810/645

Kultur PC

Erawan Co., Ltd.

Erawan Co., Ltd.

ν M 810/650

Tremproof l400SR

Tremco Far East Ltd.

Wo Loong Engineering & Construction Ltd.
Kin Tak Lee Building Works & Co., Ltd. Perfect Construction Engineering Co.

L/M 810/671 Morter-Plas包, Vai Cheong Building Works Co., Ltd.
νM 810/670 Soprasun 3 Meridian Construction Co., Ltd.
LIM 810/677 Unosint Marvel Harvest Ltd.
νM 810/680 Aries P Onward Industries Co.
νM 810/635 Britorch 4mm Wheeler Waterproofing (S&C) Ltd.
L爪1810/683 Superflex Wheeler Waterproofmg (S&C) Ltd.
LIM 810/666 Index Nova Salemay Pro-Tech Ltd.
(Normal Grade)

Tal< Choi Asphalt Reconstruction Works Co.

Meridian Construction Co., Ltd.

Marvel Harvest Ltd.

Onward Industries Co.

Wheeler Waterproofing (S & C) Ltd.

Wheeler Waterproofing (S&C) Ltd.

Salemay Co., Ltd.

E-MTC2005-PS.II-00-0

- PS.l1/4

Annex B to PS.l1

3. List of Specialist Roofing Materials Contractors for Roofing System comprising Type “ AIr'
Roofing sheet Materials with self finishes:

APB Ref. ASD.PB Product 企草包 1

Applicator

L 岱 1 810/201 Butynol Ardex Hong Kong Ltd.

Tal< α leong (Yau Kee) Engineering Ltd. Freyssinet HK Ltd.

ν M 810/202 Hertalan Hacro Waterproofing Con 甘 actors Ltd.

Hacro Waterproofing Contractors Ltd.

UM 810/208 P 訂剖 on NT4 Marvel Harvest Ltd.

Marvel Harvest Ltd.

UM 810/218 Tremply Tremco Far East Ltd.

Wo Loong Engineering & Construction Ltd. Perfect Construction Engineering Co.

ν M 810/615

Soprerna

Wo Loong Engineering & Construction Ltd. Wo Loong Engineering & Construction Ltd

ν M 810/625

Shelterbit Ardex Hong Kong Ltd.
(Slated Finish)

Hancrete Engineering Co., Ltd ‘

LIM 810/671

Morter-PI 品 G' .\1; 也 Cheong Building Works Co., Ltd.

Vai Cheong Building Works Co., Ltd.

ν M 810/635

Britorch 4.5mrn Wheeler Waterproofing (S&C) Ltd. (Slate Surfaced)

Wheeler Waterproofing (S&C) Ltd.

UM 810/683

Superflex Wheeler Waterproofing (S&C) Ltd.
(Slate Surfaced)

Wheeler Waterproofmg (S&C) Ltd.

ν M 810/694

Tongda Unigum Wai Hung Machineries & Trading Ltd.

Wai Hung Machineries & Trading Ltd. Way Lo Engineering Co., Ltd.

ν M 810/670

Soprasun 4AR Meridian Construction Co., Ltd.

Meridian Construction Co., Ltd.

LIM 810/666

Index Nova Salernay Pro-Tech Ltd.
(Mineral Grade)

Salernay Co., Ltd.

ν M 810/680

Aries PGR Onward Industries Co.

Onward Industries Co.

E-MTC2005-PS.II-00-0

- PS.l1/5

Annex B to PS.ll

4. List of Specialist Roofing Materials Con 甘 actors for Roofing System comprising Type “ Br'
Liquid Applied Roofing Materials requiring protection:

APB Ref. ASD .PB Product

主巨型

Applicator

ν M 810/312

Rooftex (Black) Hsin Hung On Engineering Ltd.

Kin Ching Besser Co.) Ltd.
Perfect Construction Engineering Co. Hancrete Engineering Co., Ltd. Asian Creator Engineering Ltd.

ν M 810/408

Bond Tu Marvel Harvest Ltd.

Marvel Harvest Ltd.

ν M 810/410

Tremproof 60 Tremco Far East Ltd.

Wo Loong Engineering & Construction Ltd.
Sunray Engineering Company (Operated by Karcena Ltd.)
Perfect Construction Engineering Co.

L/M 810/306 AH Seamless Wui Chun Building Materials Ltd.
Membrane
L/M 810/644 Isothane EMB Meridian Construction Co.) Ltd.
νM 810/672 Polybrane Erawan Co.) Ltd.
193/197
L/M 810/678 Newflex Vai Cheong Building Works Co.) Ltd.
R-I00

Wui Chun Building Materials Ltd.

Meridian Construction Co., Ltd.

Erawan Co., Ltd.

Vai Cheong Building Works Co.) Ltd.

E-MTC2005-PS.II-00-0

-PS.l1/6

Annex B to PS.ll

5. List of Specialist Roofing Materials Con 甘 actors for Roofing System comprising Type “ BIT"
Liquid Applied Roofing Materials with self finishes:

APB Ref. ASD.PB Product 主且甚企policator
UM 810/405 Rooftex Hsin Hung On Engineering Ltd. Kin Ching Besser Co., Ltd.
(White) Perfect Construction Enginee巾gCo.
L品1810/406 Rooftex Hsin Hung On Engineering Ltd. Perfect Construction Engineering Co.
(Aluminium) Kin Ching Besser Co., Ltd.
Hancrete Engineering Co., Ltd.
UM 810/408 Bond Tu Marvel Harvest Ltd. Marvel Harvest Ltd.
νM 810/603 TremproofTBS Tremco Far East Ltd. Wo Loong Enginee巾Ig & Construction
950 Ltd.
UM 810/642 Decadex Conspec Division of Stress (Far E訟。Ltd.
Hongkong United Dockyards Ltd.
UM 810/678 Newflex R-IOO \1:位Cheong Building Works Co., Vai Cheong Building Works Co., Ltd.
Ltd.

E-MTC2005-PS.I1-00-0

- PS.l1/7

Annex B to PS.ll

List of Tvoes of Approved SDecia1ist's Roofing System
(I) Spe_i 平 list's roo_ng system comprising type "AI" Roofing Sheet Materials
requmng protection

(1) Bituthene 3000
(2) Marleytorch (300S)
(3) Soprema
( 4) She1terbit (Sand Fi 凶 sh) (5) Shelterseal
(6) Kultur PC
(7) Tremproof 1400SR
(8) Morter-Plas'S'
(9) Soprasun 3
(10) Unosint
(11) Aries P
(12) Britorch 4.5rnm
(13) Superflex
(14) Index Nova (N onnal Grade)

(II) Sp_cia1_i_t_ __ofing system comprising type "AIl" Roofing Sheet Materials
with self finishes

_ )

(1) But 戶 101
(2) Hertalan
(3) Paralon NT 4
(4) Tremply
(5) Soprema
(6) Shelterbit (Slated Finish)
(7) Morter- Plas ‘ G'
(8) Britorch 4.5mm (Slate Surfaced)
(9) Superflex (Slate Surfaced)
(10) Tongda U 凶 gum
(11) Soprasun 4AR
(12) Index Nova (Mineral Grade)
(13) Aries PGR
(III) _peci_li.st's ro_f}ng systen: comprising type "BI" Liquid Applied Roofing
Materials requiring protection

(1) Rooftex (Black)
(2) Bond Tu
(3) Tremproof60
(4) AH Seamless Membrane (5) Isothane E1\ 也
(6) Polybrane 193/197
(7) Newflex R-l 00

(IV) _peci_li_st's :_ofi__ _y_t_m comprising type "BIl" Liquid Applied Roofing
Materials with self finishes

(1) Rooftex 仙也 ite)
(2) Roo 丘 ex (Aluminium) (3) Bond Tu
(4) TremproofTBS 950 (5) Decadex
(6) Newflex R-I 00

E- 扎 1TC2005-PS.ll-00-0 - PS.ll/8

Annex C to PS.l1

List of Non-destructive Test Specialists for Roofing System

1. Infrascan (HK.) Ltd.

Address

Tel. Contact

Unit 15, 12/F, Paramount Building, 12 Ka Yip S 甘 eet,
Chai W 徊 ,
Hong Kong
28982668
孔企 . Christopher C. St 缸 lley
Mr. T. Y. Fung

2. Eastern Technical Services Ltd.
[Test Consult CEBTP σ訂 East) Ltd.]

Address

Tel. Contact

8 后 , Block B, Veris 甘 ong Indus 甘 ial Centre, 34 - 36 Au Pui Wan Street,
Fat 姐 , Shatin,
N.T.
2695 8318
孔 1r. Peter Lai

3. Materialab
(Integrity Monitoring Services)

Address

Tel. Contact

5 Lok Yi S 仕 eet,
17M.S. Castle Peak Road, Tai L 缸 n, Tuen Mun, N.T.
24508233
Mr. Mark Amor

4. TBV Stanger (Asia) Ltd.

Address

Tel. Contact

Gndl1st Floor, Din Wai Industrial Building, 13 On Chuen Street,
Fanling,
N.T.
2682 1203
Mr. D. Wylie

- end-

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