Residing is a great opportunity to increase a home’s value with a fresh, new look. It’s also an opportunity to increase energy efficiency and overall comfort with moisture-resistant, durable insulation.
For 60 years, BLUE™ STYROFOAM™ Brand Insulation has been a leading building insulation solution for residing contractors and homeowners alike. STYROFOAM™ Brand Extruded Polystyrene (XPS, ASTM C578 Type X) Insulation is valued for its exceptional insulation performance, excellent moisture resistance and the appropriate level of water vapor permeability under vinyl siding.
To appreciate the value of Dow’s extensive portfolio of rigid insulated sheathings, Dow recommends comparison shopping STYROFOAM™ Brand XPS and the competition – white bead board or expanded polystyrene (EPS, ASTM C578 Type I).
As part of a Type I foam-backed vinyl siding system, EPS is laminated or adhered to vinyl siding for ease of installation. When comparing STYROFOAM™ Brand XPS to this system, it is important to consider the following characteristics, including:
After you have learned more about – and compared – the key components of quality insulation, you will be in a better position to choose the right insulation for your application.
The first comparison is simple. STYROFOAM™ Brand XPS is BLUE™. EPS is white. Then when you look under a microscope, it is easy to see the structural difference.
Proprietary formulations and manufacturing processes for STYROFOAM™ Brand XPS ensures a closed-cell, high-density structure, providing a compressive strength of 15 psi (ASTM C578 Type X). This means XPS stands up to pressure and abuse at the job site much better than white EPS, with a compressive strength of 10 psi (ASTM C578 Type I).
STYROFOAM™ Brand XPS also resists moisture and maintains R-value.
When the white EPS backing on vinyl siding becomes damaged, it can create gaps, which can increase the risk of water absorption. Moisture absorption significantly impacts the R-value, reducing the overall energy efficiency and performance of the EPS-backed siding. The excess moisture can also increase the risk of mold and mildew and other moisture-related problems.
STYROFOAM™ Brand XPS Insulation is built on sound scientific principles and the proof is in the test results. Insulation from Dow outperforms white bead board in the following categories based on ASTM C578.
When it comes to R-value, the greater the number the better. BLUE™ STYROFOAM™ Brand XPS not only starts off with a greater value (5.0 per 1"), but its durable formulation and consistent thickness provide a long-term, stable R-value on the walls of a home. In contrast, EPS Type I has an R-value of 3.6 per 1".
Contoured vinyl siding adhered to contoured white bead board (EPS) may be a time-saver, but it comes at a cost: Contoured EPS foam has a significantly lower Rvalue when compared to the consistent thickness found in STYROFOAM™ Brand Extruded Polystyrene Insulation. For the best value, you cannot beat STYROFOAM™ Brand XPS for consistent and continuous protection around a building envelope.
White bead board (EPS, ASTM C578 Type I) absorbs 13 times more moisture than STYROFOAM™ Brand XPS Insulation. Water retention can rob the insulation of R-value and provide the necessary elements for moisture-related problems such as mold and mildew.
Help keep damaging moisture out of a home with STYROFOAM™ Brand XPS.
What happens when moisture, vapor and bulk water make their way into the siding/insulation system? If water in any form becomes trapped, it can potentially lead to mold, mildew and other moisture-related problems.
In a typical vinyl siding/adhered EPS system, water can become trapped on the one side by the vinyl siding. The only way out in this system is for the water to make its way into the EPS. And this EPS foam is typically applied directly against a relatively impermeable woodbased sheathing, increasing the potential for moisture damage.
As a separate layer, STYROFOAM™ Brand XPS provides an effective air space, which creates a drainage plane that allows water to drain to the bottom of the walls and escape from the building envelope through weep holes. This air space enhances the wall assembly’s drying potential, which can contribute to a more comfortable home and reduce the potential for moisture-related problems.
Think of permeability as a building material’s ability to breathe (allowing moisture in the vapor state to pass through the material). EPS seems to have a higher permeability (5 perms at 1" thick), but when attached to vinyl siding the overall perm rating drops to 0.05. And drying toward the interior is also limited because the typical wood-based sheathing has a perm rating of 0.88.
Bottom line – When looking at an EPSbacked system, the permeability of the overall offering is determined by the siding itself, not the EPS. Therefore, both XPS and EPS-backed vinyl siding systems have similar, if not identical, overall permeability ratings.
Air infiltration is one of a home’s biggest enemies. It enters a home throughcountless gaps and cracks, contributing up to 40 percent of a home’s energy loss. That means a typical 2,500 ft2 home can have over 1/2 mile of gaps and cracks.* And to make matters worse, air infiltration also increases the likelihood of moisture intrusion in the form of water vapor.
It takes a WRB to reduce moisture and air intrusion. Several STYROFOAM™ Brand Extruded Polystyrene Insulation products qualify as a WRB, eliminating the need for a separate housewrap, and saving material and installation costs.
White EPS products, however, require a facer with a low perm rating or a separate housewrap with taped seams to claim WRB properties. This adds time, money and material to the bottom line.
When installed properly, nearly all rigid foam insulations from Dow qualify as a WRB according to the International Residential Code. Examples include:
For the highest level of protection against moisture and air infiltration, select from Dow’s extensive portfolio, including:
|1||Dayabumi Complex, KL||2||Happy Garden - Jln Kelang Lama, KL|
|3||East Asiatic Extension - KL||4||Sabah Hotel - Sandakan, Sabah|
|5||UDA Shopping Centre - KL||6||Corner P3 Factory - Prai, Penang|
|7||Ridgo Royal Hotel - Miri, Sarawak||8||D'mayang Apartments - Jln Damai, KL|
|9||Sucasa Service Apartments - Jln Ampang, KL||10||Telekom - Jln Tun Sambathan, KL|
|11||Wisma Cyclecarry - Jln Raja Laut, KL||12||The Forum - Jln Tun Razak. KL|
|13||Capital Square - Jln Munshi Abdullah, KL||14||Condominium - Johor Bahru|
|15||EON Headquarters - Shah Alam||16||Hotel Syuen - Ipoh|
|17||Wisma AIA - Melaka||18||Wisma EAC - Jln Tandang, PJ|
|19||Wisma Guan Aik Mong - Jln 225, PJ||20||Condominium - Bukit Tunku, KL|
|21||Plaza Raja Chulan - Jln Raja Chulan, KL||22||UOA Centre - Jln Pinang, KL|
|23||Wisma Kewalram - Jln Ampang, KL||24||Ethylene (M) Sdn Bhd - Kerteh|
|25||Hospital TLDM, Lumut||26||Maybank Headquarter - Shah Alam|
|27||Nasteel Electronic (M) Sdn Bhd||28||Pink Rose Kindergarden, USJ|
|29||Sapura Office - Bangi||30||Southern Hospital, Melaka|
|31||Wisma Nam Heng - Bukit Mertajam||32||Measat Satelit Building - Langkawi|
|33||Renaissance Hotel - Jln Ampang, KL||34||Nikko Hotel - Jln Ampang, KL|
|35||New World Hotel - Jln Ampang, KL||36||Tanaka Electronics Kawasan Perusahaan Bayan Lepas - Penang|
|37||Kuala Lumpur City Centre Tower 1 & 2 - KL||38||Wisma Perkasa - KL|
|39||Tropicana Gold Resort - KL||40||Skyline Tower - Johor Bahru|
|41||D'Parade Condominium - Prai, Penang||42||Marina bay - Tanjong Tokong, Penang|
|43||Johor Water Front||44||Johor Duty Free Port|
|45||First Silicon Kuching||46||Kulim Technology Park|
|47||Prestint 20 Putrajaya||48||Putrajaya Prestint 1, Parcel E|
|49||Putrajaya 4G1 and 4G2||50||Serdang Hospital|
|51||Putrajaya Parcel E, LEO Building from Ministry of Energy||52||Putrajaya Parcel Z|
|53||Data Centre Cyberjaya||54||The Curve, Mutiara Damansara|
|55||Sri Maya Condominium||56||Emerald Condominium|
|57||The Curve Hotel||58||KUTKM, Melaka|
|59||Federal Hill Development Project||60||Bukit Gita Bayu Bungalow|
|61||Muar Pharmacy, Johor||62||Armanee Shoplot, Mutiara Perdana, Phase 1|
|63||Shell Refinery Centre, Port Dickson||64||Johson Medical Cabin|
|65||UTP Mosque||66||Orion Condominium, Jln Tun Razak|
|67||Damai 33 Town House, KL||68||KLCC Hotel, KL|
|69||Sri Lanka Airport||70||Cooling Tank|
|71||Gypsum Factory, Klang||72||SPPK Doble Storey Link House, Cheras|
|73||CIQ, Johor Bahru||74||Boutique Hotel, Langkawi|
|75||Dua Residency Condo, Jln Tun Razak||76||Japan Club, Taman Seputeh|
|77||Sri Maya Condominium - Phase 2||78||Armanee Shoplot, Mutiara Perdana, Phase 2|
|79||Sarawak International Medical Centre||80||Presint 18, Pangsapuri Kerajaan, Putrajaya|
|81||3m2, Old Klang Road, KL||82||K Residence, Sky Bridge|
|83||Pusat Tenaga Nasional, Bangi||84||Langkawi Yacht|
|85||K Residence, Podium||86||Park & Ride, Putrajaya|
|87||Great Eastern Condo, Jalan Ampang||88||Pavillion Shopping Centre, KL|
|89||Mines Heritage, Seri Kembangan||90||Novozymes Research Office, Technology Park|
|91||KUTKM, Package 2A, Melaka||92||Cargill Palm Product Factory, Port Klang|
|93||The Meritz Condominium, Jalan Ampang||94||Prefab Housing Project @ TAR Villas, Taman TAR, Ampang|
|95||D'Alamanda Pudu Impian Condominium, Jalan Pudu Ulu, KL||96||Isetan, Mid Valley|
|97||Mukim Batu Condo, Mon't Kiara||98||Hampshire 2 Condo, Megan Avenue, KL|
|99||Plus HQ, Shah Alam||100||Cobrain HQ, Glenmarie Shah Alam|
|101||Utem, Unit Pentadbiran Utam, Melaka||102||MLNG Sub Station, Bintulu|
|103||PJ City, Jalan 222, PJ||104||Green Heights Conda, Kuching, Sarawak|
|105||Park Seven Condo, Persiaran KLCC||106||Suncity Condo, Sri Hartamas|
|107||UTeM Ayer Keroh, Melaka, Cavity Wall||108||UTeM Ayer Keroh, Melaka, Pusat Komputer|
|109||UTeM Ayer Keroh, Melaka, Dewan Besar||110||Tunku Abdul Rahman (TAR) College, Setapak|
|111||D'Alamanda Pudu Impian Condominium, Jalan Pudu Ulu, KL - Phase 2||112||4G7, Jabatan Penguam Negara, Putrajaya|
|113||Tesco Hypermarket, Kampar, Perak||114||Gurney Plaza Extension, Penang|
|115||Eco-Paradise Sauna Room Insulation, M'sia||116||Swiss Embassy, KL|
|117||Ken Bangsar Condominium, KL||118||Hamshire Residence, Off Jalan Amapng, KL|
|119||ICT Centre, Bank Negara, Cyberjaya||120||ICON (Star Residence) Jln. Tun Razak, KL|
|121||Titiwangsa Bungalow Project, KL||122||KL Sentral, Tower B & C|
|123||Country Heights Damansara Bungalow Project||124||F & N Factory, Sg. Besi|
|125||5G2 Tourism, Putrajaya||126||Lumina Kiara Condominium & Semi-D Project, Mon't Kiara|
|127||Casuarina / Hard Rock Hotel, Penang||128||Bukit Damansara Bungalow Project|
|129||Bukit Aman Head Quarter, , KL||130||Tropicana City Office Tower & Pool Deck|
|131||191 units Sering Ukay Terrace House||132||Perwira Bintang Mall, Melaka|
|133||Suruhanjaya Tenaga, Precint 2C15, Putrajaya||134||PJ Commercial Development at Sec. 39, SS2, PJ|
|135||Troika KLCC Condo, KL||136||Malaysia Science University (MSU), Shah Alam|
|137||Senai Airport, JB||138||Gateway Kiaramas Shop & Service Apartment, Mon't Kiara|
|139||DIGI Telecommunication, Subang Hi-Tech Park||140||Sunway South Quay, Package RC 8|
|141||Seni Main (K4) Condominium, Mon't Kiara||142||Swiss Residency, Jalan Pudu, KL|
|143||Bangsar, Jalan Kaloi Condominium||144||34 units 3 storey T/Hse, Valencia, Sg. Buluh|
|145||Sinaran TTDI Condominium, TTDI, KL||146||Plenitude 197 units D/S Link House, Puchong|
|147||3 unit Bungalow, Bukit Pantai,Bangsar||148||Sarawak Energy Berhad Building|
|149||Star Office, Ipoh||150||Universiti Malaya, Komplek Inst. Pengurusan, Penyelidikan & Perundingan|
|151||Arena Merdu Retail & Office Building, Jln Ampang, KL||152||The Atmosphere Shop & Office, Seri Kembangan (Phase 1)|
|153||Setia City Mall, Setia Alam, Selangor||154||Sabah Medical Centre - OT Room|
|155||Gardenview Residence, Cyberjaya||156||Region Asset Factory, Glenmarie|
|157||Bank Negara Children Care Centre, Jln Ismail, KL||158||Safira @ Subang Bestari - 43 units Bungalow, Sg. Buluh|
|159||Boulevard Plaza, 3C7, Precint 3, Putrajaya||160||Weida Base Slab Insulation, Kuching, Sarawak|
|161||Denai Alam 2 & 3 storey Terrace House, Sg. Buluh||162||Merdeka Plaza, Kuching|
|163||KTMB Passanger Platform, Gurun, Alor Star||164||5 Stone Condominium, SS 2, PJ|
|165||Biogas & Wastewater Treatment Plant (12 units Treatment Tanks) for Livestock, Samarahan, Sarawak||166||The Atmosphere Shop & Office, Seri Kembangan (Phase 2)|
|167||Monnash Universit, Graduate School, Sunway||168||Tokuyama M'sia Polycrstalline Mfgt. Plant, Bintulu, Sarawak (Phase 1)|
|169||KL Sentral, Lot G||170||Primo II - 31 units Bungalow, Bukit Jelutong, Shah Alam|
|171||Viva Hotel, Jln Loke Yew, KL||172||Elken Factory, Subang UEP Industrial Park, Subang Jaya|
|173||WismaMiramas Office Building, Taman Desa, Old Klang Road||174||Sunway Montana 107 units Terrace House & Semi-D, Desa Melawati, KL|
|175||Bungalow RS1 & RS2, Taman Emas, Dengkil, Sepang||176||Ken Holding Corporate Office Chiller Tank, TTDI, KL|
|177||Eco City, Midvalley - Sales Gallery||178||CIQ Ferry Terminal Nusajaya, Johor Bahru|
|179||NAZA TTDI Mosque, Seksyen 15, Shah Alam||180||U-Thant Residency, KL|
|181||Tropica Grande, Tropicana PJ||182||The Strand Garden Office, Kota Damansara|
|183||Tokuyama M'sia Polycrstalline Mfgt. Plant, Bintulu, Sarawak (Phase 2)||184||Refurbishment of Dayabumi Complex, KL (Raised Floor)|
|185||Akashi Kikai Factory, Labu, Seremban||186||Sunway South Quay, Package RC 3|
|187||Eco-Paradise Sauna Room Insulation, Singapore||188||Tune Hotel Extention, Jln Tunku Abdul Rahman, KL|
|189||Sunway Monash University Extension, Bandar Sunway||190||Jaya One (Phase 3), Petaling Jaya - Raised Floor Insulation|
|191||Jaya One (Phase 3), Petaling Jaya - Metal Deck Roof Insulation||192||Cherish Spring Office Suit & Service Apartment, Seksyen 13, Shah Alam|
|193||Molek Pine Condominium, Taman Molek, Johor||194||Ice Truck, Nilai|
|195||TTDI Adina, Shah Alam||196||Glenmarie Court Bungalow, Shah Alam|
|197||Madge Mansions Luxury Condominium, Jalan Ampang||198||Comtec Solar Water Plant, Kuching|
|199||Alamanda Surau (Raised Floor), Putrajaya||200||Indo Alam Bina Development|
|201||Ritz Corporate Suite, Jalan Ampang||202||Tangkas Arena L/Industrial Development, Subang Jaya|
|203||AraGreens Residences, Ara Damansara||204||9 Madge Luxury Low Density Service Apartment, Jln Ampang, KL|
|205||Sunway University, Bandar sunway (New Phase)||206||The Capers Sentul East (Club House), KL|
|207||Ice Truck, Nilai (Chemrex Corporation S/B)||208||Biz Suites, Kota Damansara|
|209||Zefer Hill Residence, Bandar Kinrara, Puchong||210||Ice Truck (Extruded Polystyrene Foam Insulation S/B)|
|211||Glenteq Singpore||212||The Leafz, Sungei Besi, KL|
|213||Plaza Merdeka, Kuching, Sarawak||214||The Light Collection, Penang|
|215||Hydroelectro Plant, Hulu Terengganu||216||B. Braun Factory (5, 8 & 9), Bayan Lepas, Penang|
|217||Rimbun Condominium, Ampang Hilir, KL||218||Kiatthanavat Bangkok|
|219||Show House at Old Klang Road||220||Mid Valley Megamal (Raised Floor)|
|221||Y-Cantonments TownHouse, Pulau Tikus||222||Eve Suite, Ara Damansara|
|223||DYMM Sultan Selangor Residence, Bukit Jelutong, Shah Alam||224||Damansara City, Pusat Bandar Damansara, KL|
|225||BEREMI Hotel, Off Jalan Sultan Ismail, KL||226||Cyberjaya Green Mosque, Cyberjaya|
|227||Seri Riana Resudence, Wangsa Maju, KL||228||Jade Hills, Kajang|
|229||Sentral Bazar, Nilai||230||Ritz Corporate Suite (Tower 2), Jalan Ampang|
|231||Xiamen University, Sepang||232||B. Braun CGMP Plant Phase 2 (Package B1A), Bayan Lepas, Penang|
|233||Tropicana Gardens (Phase 1), Kota Damansara||234||Mid Valley Megamal (Raised Floor - Package: T-006 & T006A, 3rd Flr)|
|235||University Technology Petronas (UTP), Tronoh, Ipoh - R & D Block||236||Melaka Hatten City - Lot 8, Melaka|
|237||Samalaju Port (New Phase), Bintulu||238||Pavilion Bukit Bintang (New Phase)|
|239||Tropicana Gardens (Phase 2), Kota Damansara||240||Royal Pavilion Bukit Bintang, KL|
|241||Pantai Sentral Park, Pantai Dalam , KL||242||Petrajaya Hospital, Kuching, Sarawak|
|243||The Armanna Service Apartment, Kemuning Utama, Shah Alam||244||Site Project SPE DUKE 3 (Sec 2) - CAISSON PILE|