Document 3N29YL2Jek7RDM52bmN91X7N3

EXPORT NEWS SHEET OF THE RUBEROID CO. LTD.. LONDON No. 49 OCTOBER 1906 IF THE ROOFING CONTRACTOR by Ruberoid Export HAD HIS WAYManager R. D. Clarke ARCHITECTS are, I find, increas need to be taken to protect the roofing on the right specification and method of ingly recognising the contribution membranes from solar radiation or & application. If the drawings and that the specialised sub-contractor cancorrosive atmosphere? Does the type specifications have gone ahead without make at the planning stage of a project. of substructure being employed present taking all these factors into account, it The sub-contractor is not only able to any special weatherproofing problems? may be too late to offer anything but draw attention to design features that Have such aspects as insulation, roof second-best solutions by the time the would make his part of the work drainage and the provision of roof- roofing contractor arrives on the scene. unnecessarily complicated and costly lights all been considered in relation to It is because this company has been but can also on occasion put for the main roofing operation? Is the very conscious of the need to offer ward suggestions for improving the roof to be put to any purpose other than specialist advice on roofing matters at appearance or efficiency of the finished straightforward protection of the an early stage that we set up our Design job. Most important of all are the building? Service, which is backed by the long possibilities of substantial economies These are just some of the questions practical experience of our world-wide which can sometimes be achieved when the roofing contractor would normally contracting operations and by the the sub-contractor is brought in at the design stage of the building, when not want ansvrered before he could decide Continued on page 2 merely the substructure but even the main structure itself can be considered in the light of the weatherproofing it RUBEROID FOREMAN AOVISES CONTRACTORSwill be called upon to support. Perhaps it might be helpful if I try to give the roofing contractor's point of view -- that is to say, the procedures that he would like to see generally adopted in order to give him the best possible chance of doing a thoroughly efficient, trouble-free job. It is at the design stage that, the roofing contractor's problems very often start, simply because no one is looking at the drawings from his particular stand point. In a recent issue we described a contract in West Africa where a great deal of roofing trouble was caused by the use of an unsuitable substructure of woodwool slabs nailed direct to timber purlins. Many similar examples could be cited. As soon as a roofing contractor is asked to undertake a job, a host of questions spring to his mind. Is there anything about the location of the building or the use to which it is being put that might necessitate, say, additional expansion joints in the roofing ? Is the roof design practicable from a fixing standpoint? Do special precautions i MICH04766 If the Roofing Contractor had his way continued from Page One research facilities of our Development Department. This service is available to both U.K. and overseas architects and is being used today by leading designers. The roofing contractor also has his viewpoint -- and at times a very strong one -- about his role during the execu tion of a contract. On the site the old attitude still sometimes prevails that the roofers are simply men who come along and fix two or three layers of "felt" on whatever the previous trades have provided as a substructure. But here again the specialised nature of the materials and methods employed today by the roofing industry makes it more than ever necessary that the fixing work should be carried out to high standards -- and on a sound and properly prepared substructure. Too often, the roofer finds himself caught in a conflict between his own professional conscience, which tells him that conditions are not quite right for his purpose, and outside pressures which urge him to get on with the job and not hold up other trades. If there is any kind of penalty clause attached to the contract, the conflict can be pain fully acute. While everyone involved is anxious to see a project completed on schedule, standard of workmanship is also an important consideration. The roofing contractor feels that be should not be expected to proceed if, for example, the substructure is poorly finished or not sufficiently dried out or liable in some way to impair the efficiency of the weatherproofing. Nor does he feel happy about doing so if the building work is at the stage where he can only half-do his job or will have to undo part of it again subsequently. In other words, the roofing contractor feels that he should, in consultation with the architect and main contractor, have some say in whether the conditions are such as to produce a sound, long-lasting, weathcrtight roof. Otherwise there a the danger of more haste, less speed, because sooner or later any deficiencies will have to be made good. The roofer also considers that be has the right to ask that his work should not be exposed to unnecessary risks of damage during the completion of the project. Many a good roof is ruined by following trades. This is always liable to happen when other trades work on the roof-top after the weatherproofing has been fixed. Foot traffic over the newly laid surface, the spilling of substances injurious to the membranes, the movement of plant and materials, the leaving of piles of debris -- none of this exactly puts the finishing touch to the roofer's work. The architect can reduce these risks by more.rational scheduling of the work of the various trades and by regular site meetings. On some occasions it may even be worth while to consider the provision of a temporary protection over the completed weatherproofing. Finally, the roofing contractor has a very real concern about how his roof is used once Ik has (aid it. Ruberoid have always advocated regular inspection of roofs on the principle that a stitch in time saves nine, and I would like to see this procedure become more widely accepted as a normal part of roof maintenance. To this end I would add that the client has a responsibility -- in his own interests -- to look after his roof and not abuse it. By abuse I mean, for example, regularly walking over part of the roof when it was not designed for the purpose; using it as a mounting platform for items of equipment or electrical installations that might weaken the adhesion or weathertight ness of the membranes: or. as some times happens, putting the building to some new use that drastically alters, say, the internal humidity conditions. I stressed at the outset that f was putting the roofing contractor's point of view. | am only too well aware that in practice everyone from the architect downwards has to compromise at times. Cost considerations, the availability of labour, bad weather -- many factors like these can upset the best laid plans. But what is important, I feel, is that the building industry should move in the direction of closer consultation between all those engaged on a project and that in particular the specialist subcon tractor should have the chance to express his views on any KCt of the job, from design to w, planning, that might affect the efficiency of his service. In this way and only in this way can efficiency be achieved most economically. TNA 200 NOW IN ACTION Swtaniaf a--l Ma( raaiarne u CHyyii aUakarfe at Baal Kilbride. Scetlaad. wbicb baa base reefed arith Haberatd mat *eeltae. TNA 200, a brilliant white tough plastic roofing exclusively introduced to Britain by Ruberoid is now appearing on a variety of municipal and industrial buildings in the U.K. Probably the most important project for which it has been specified is the new Barbican scheme in the Gty of London. This roofing consists of a polyvinyl fluoride film laminated to an asbestos fibre felt impregnated with neoprene. The PVF film, Tedlar*. is made by the Du Pont Company of America. It will stand up to temperatures from -J0F to over 250"F and will not support Du Pont Registered Trade Mark combustion. TNA 200 has the exceptionally high reflectivity figure of 88 per cent which is maintained for long periods because the surface is self-cleaning and does not readily hold dust or dirt. This keeps tlK roof temperature close to the ambient, and results in more comfort able working conditions and less thermal movement in the roof substructures. TNA 200 Roofing is fixed by conventional methods employing hot bitumen and incorporating appropriate Ruberoid underlayers according to the substructure. 2 MICH04767 MORE FACTS ABOUT HYLOAD RUBEROID CHOSEN FOR MAJOR CITY DEVELOPMENT ARCHITECTS and designers from all over the world are watching with interest the Barbican Development, an enterprising project by the Greater London Council which will change the face of the City of London. After lengthy negotiations with the Council's architects. Ruberoid has been Tha Cntral Ebcfricfer Caaantiaa BmH'i in m tlMM! S.BOt la jartiM HyiMd rtatim at Ratcttga-aa-Saar. NatUathaawWn have baaa ataS. nominated for roofing on the Develop ment. This major contract, which will take 3/4 years to complete, involves six HYLOAD Pitch Polymer Damp- will dispense with the need to use hot different Ruberoid specifications which course is now available in metric bitumen is by means ofa solvent welding include the use of approximately 10,000 as well as traditional British measurep rocess, the most common solvent for square yards of TNA 200 and 24,000 ments. the alternatives being 15 metres this type ofapplication beingTetra Hydra square yards of Hyload 75 Roofing. x ] metre or 16 yards x I yard. Furan. This method of sealing the laps In view of the international interest in Depending upon the phase of building was adopted by the British Antarctic the Barbican Development "Round the operations, occasions can arise where Survey with Hyload 75 roofing on their World" will, from time to time, publish adhesion is required of Hyload to asphalt buildings at Halley Bay. progress reports of work on this project. or of asphalt to Hyload. In the first case the most practical method is to employ THE DOME OF THE ROCKhot bitumen at the lap. In thesecondcase, where asphalt is required to adhere to Hyload. it is important that the temp erature of the asphalt at the time of application should be in accordance with the requirements of the British Standards for asphalt at between 200 and 220C. Tests by our Development Department show that adhesion at these temperatures is not likely to fall below 2,000 lb. per square foot. Another method of obtaining an effective bond at side and end laps which RUBEROID COMPOUND RUBEROID has always stressed the importance of using an appro priate grade of bonding bitumen compound for the bonding of built-up roofings. This vital factor has been appreciated in industry and by the British Standards Institution in particular; the Institution's recently published British Standard 3940:1965 "Classification for Adhesive Based on Bitumen or Coal Tar" Type 8 covering blown (oxidised) grades of bitumen for bonding layers of roofing confirms that Ruberoid Compound complies. The new British Standard does however state that IN THE COURSE of extensive renovation of the ancient AJ Aqsa restoration more than 5,000 square Mosque which is adjacent. metres of Ruberoid products have been The work is supervised by Abdul- the roofing contractor will advise on the used for waterproofing the Dome of the Minim Abdul Wahab, consultant actual grade of bitumen to be used dep Rock, Mount Moriah. Jerusalem -- architects and engineers to the Depart ending on the type of structure and one of the most famous historic buildings ment of Antiquities of the Hashemite situation. As in the past Ruberoid will in the Middle East. Kingdom of Jordan. The main continue to make their recommendat Moreover, Ruberoid lead-lined damp- contractor is Bin-Ladin of Saudi ions on such matters. course is currently being used for the Arabia. 3 fn past issues Ruberoid Used For Unique Scottish Venture 3/2/Apr. 55- I April 1955 ALUMINIUM PAINT ALUMINIUM ROOFING BRIDGE WATERPROOFING BUILDING PAPER Reinforced Kraft Piper CATALOGUES COMPOUNDS Bonding Built-up Roofing CONTRACT PLANNING Gaoaral principle Choice or tpaoAeatioa Comet briefing Ruberoid eerviee COPPER ROOFING. RUBEROID 3/17/Jao. 39 Devriopmeois 2/2?/JuL 61 Fixm* 2-3/29/Jan. 62 In tbe tropica 2-3/35/JuL 63 Quariee dfecuaeed 4/36/Oet 63 ___a ,, 3/40/0. 64 COSTING (Built-up Roofing) I/U/Oct 57 Comparieoo with alatta and tiles 2/24/Oct 60 COSTING (Roberdeek) 3/33/ien. 63 COST REDUCTION CULVERT PROTECTION CURTAIN WALUNO DAMPCOURSES Hjioad Dampeouree Aa aerial view *f the StirHag Uveeteck Marital which is vapidly eeeriag caopletsau. RUBEROID products have been widely used in the construction of No. 1 Phnwe Dampcoursa a unique project at Stirling in Scotland. Resistance to termites DESIGN SERVICE DOMB-ROOFTNO RUBERVENT Built by Livestock Marts Limited, it is predominantly a cattle market with eVERWEAR FLOORING FIRS PREVENTS accommodation for 3,000 cattle, 13,000 sheep, 1,000 pip and 300 calves, but the GLASPHALT ROOFINO n Min. Surfaced .. ,, ,, 3/7/JuL 56 3/27/JuL 61 BLISTERING same 21 acre sitealso houses a restaurant, banks, shops, hairdressers, a service GUARANTEES 1/22/Apr. 60 station and parking for 1,000 cars so HYLOAD DAMPCOURSE INSULATION. ROOF * `* IOINT1NO. EXPANSION C. and B. Jointing Cmd Jointing Rood MAfNTENANCE. ROOF A3/41/Jan. 65 l/24/Oct60 l/37/Jaa.64 QUOTE from a digest issued by tbe that farmers and their families attending British Building Research Station the market may follow a variety of gives some indication of the timepursuits without leaving the one 4/14/Apr. 50 required to dry out wet screeds. It location. 4/U/JuL 57 1/14/Apr. 5t 1/31/lun. 62 reads:-- "Tbe difficulty of drying out wet Attractively sited on the banks of the River Forth, the location has a super t/31/Jun. 62 screeds is illustrated by the behaviour of structure, mainly of barrel vaulted roofs Movement fractures PAINT. Robarina Alemhtlnri RAILWAY COACH ROOFS 2/29/lan. 62 2/ll/Apr. 59 3/29/lan. 62 ROOF DETAILS eaves, verges 2/ll/Apr. 59 Finish at saves and verpss J/35/Ju). 63 3/10/Apr. 57 3/33/Jan. 63 3/34/Apr. 63 a 3 inch aerated scieed exposed at Ganton Building Research Station at a slope of I in <0. The dry scieed picked up 1-7 gallons of rain water per square yard in 4 wet days. Of these 1-7 gallons, 0-2 gallons could be drained off. Half the remaining water dried out when which, when combined with the flat roofs over the shopping area, has a total of 19,000 square yards of roof area. This area was given to Ruberoid to waterproof employing Rubervent Underlay with Green Glasphalt Mineral Surfaced Roofing and Ruberglas Outlets Protections RUBERCLAD 4/9/Jao. 57 2/32/Oct. 62 4/23/JuL 60 2-3/36/Oct 63 the surface of the screed was freely ventilated but shielded from further rain in 8 days of excellent summer weather or Roofing for 6,300 feet of gutter. Hyloatf Dampcourse was used for flashing over expansion joints. The RUBERDAL ROOFING How tiles art laid Special tils finishes RUBERDECK 1/15/Jul. 51 3/39/Jut. 64 4/t9/JuL 59 1/34/Apr. 63 about 48 days of normal winter weather. Complete drying needed 36 good summer days or 180 winter days". architects for the project were Alex Strang and Associates, a/a.R.I..A., A.R.I.C.S. Design adaptability 1/20/Oct. 59 By specifying the Rubervent underlay RUBEROID ROOFING. I-S ply RUBERVENT Aid to drying out 3/33/Jan. 63 3/12/Oet. 55 2/29/Jan. 62 2/29/Jan. 62 system which isolates and ventilates built-up roofing, the pressure build-up from drying screeds which leads to blistering is eliminated. ) RUBEROID 4/36/00.63 Oenermi principles 2/21/Jan. 60 Insulating screeds Insuletioo Spadat escape vents SLATES. RUBEROID SUBSTRUCTURES Influence on weatherproofing SURFACE FINISHES TANKING TAPE. INSULATING. S.P.C. TNA 200 ROOFINO TROPICS Special roofing problem UNDERSLATTNO Reinforced Zylex Slaters' Felt 2/22/Apr. 60 l/24/Oct 60 2/37/Jan. 64 l/17/Jan. 59 1/27/Jul. 61 1/21/Oct 61 2/14/Jan. 51 4/20/Oct. 59 2/40/Oct. 64 1/32/Oct. 62 3/22/Apr. 60 Ruberoid Jointing RUBIROIO ROUNO TH1 WORLD it nMNImI Quarterly By TJe Ruhereid Co, Ui, 366 Cemmaaweilth Hmn, Materials 1-19 New Oxford Street, Leadee W.CU. The editor will wefeema coatrtbetlem irrejeeadewce from raadirv aa any iipecettefRakereidflact..f.a...r.i.d...a...e..lna' THE manufacture of Crecel Sealing market*. and Jointing Compounds and C. Produced foe The Ruberoid Co. Lid., be ft E. Jointing has been discontinued andHosier A Borer/ (Orrrteas) Ltd., 20/22 these Ruberoid products will no longer Wellington Street, Stromd, London, W.CX and printed by MonefMds (Norwich) Ltd., St. be available. Savionr't Lem, Norwich. 4