How is Re-roofing Different from Roof Replacement?
Keeping your roof in good condition is essential for protecting your home and keeping everything inside of it safe. As a homeowner, it is important that you do regular assessments and checks to see if your roof has recently undergone any damage or wear and tear. If you spot anything out of order, such as missing shingles or water damage, it is probably time for re-roofing or a roof replacement.
Unsure which method to go for? Read on to find out more about re-roofing, roof replacement, how they differ, and which option might be better for your own roof.
What is re-roofing?
Re-roofing involves layering new shingles or roofing material over the existing shingles or roof surface. It is an alternative to entirely replacing or removing a roof, and is one of the quickest and most affordable ways to restore your roof’s appearance, given it does not involve labour-intensive processes or many new materials. This process can be done if your roof is still in relatively good condition and not showing any major signs of damage. However, re-roofing can only be done a certain number of times, usually up until you add a third layer of shingles, as there could be existing damage underneath all the layers that cannot be seen.
What is roof replacement?
Roof replacements require the full removal of the existing structure. The old shingles or surfaces are stripped off to expose the damaged roof deck so it can be repaired. This requires a lot more time and effort than re-roofing, but results in a strong roof structure that addresses the underlying issues. Complete roof replacement should only be done when your roof is severely damaged or heading that way.
How are re-roofing and roof replacement different?
There are a few key differences between re-roofing and roof replacement, including:
Time and effort
As re-roofing only involves installing new shingles or a new material layer over the existing surface, it is the fastest and less labourious way to restore your roof. On the other hand, roof replacement requires stripping off the entire roof to replace with a completely new roofing system, hence it needs much more time and effort.
Cost
Re-roofing is generally more cost-effective than roof replacements, as this method requires less work and materials. Roof replacement can be quite costly due to the intensive time, labour, and materials required.
Necessity
If your roof only has some minor damage, such as missing or worn shingles, small leaks, or surface cracks, then re-roofing is a good option to repair wear and tear at a minimal cost. Severely damaged roofs that show signs of water damage, mould, broken shingles, or dents should get a full roof replacement, as these issues can hardly be solved by a quick fix.
How do I decide which method is best for my roof?
Now that you are aware of the key differences between re-roofing and roof replacement, you can assess your roof to see if it has mainly smaller damage or if it looks like it is going to reach the end of its lifespan soon. This is the most common way to judge whether your roof just needs some re-roofing or a full roof replacement.
Explore waterproof roofing solutions with ARDEX
If you fall into the re-roofing category, ARDEX has several waterproof coating solutions that could help protect your construction projects from the elements. Our liquid applied roof coating, epoxy waterproofing, and liquid applied roofing systems are highly effective waterproofing products that help strengthen and repair existing roofs. We also provide solutions for carpark coating in Hong Kong. If you are in doubt and want some professional advice, contact our team, and we can walk you through our high-performance speciality building materials to help you find the best waterproofing solutions for any construction project.
FAQs
How do I know if my existing roof needs re-roofing or replacing?
You can check your roof for any major or minor damages to determine whether it needs re-roofing or replacing. In general, minor damage will range from leaks, a few missing shingles, some cracks, or general wear and tear. Major damage should stand out to you when you do your roof inspection, including mould growth, termites, water damage, or noticeable deterioration.
When is re-roofing a better option than roof replacement?
Re-roofing is generally better for roofs that have superficial damage or wear and tear.
What are the benefits of re-roofing?
Re-roofing offers several benefits, such as reducing maintenance costs, extending your roof’s longevity, providing additional safety and insulation, and creating a fresh look for your roof.
How long does re-roofing take?
Generally speaking, re-roofing can take a couple of days up to a few weeks to complete depending on the amount of damage and the individual roof’s requirements. It will most likely be completed faster than a full roof placement.
Waterproofing Above or Below Screed: Which is Better?
When embarking on any construction or renovation project, you should put careful thought and consideration into your waterproofing methods. Waterproofing effectively protects homes, buildings, and structures from numerous types of damage, such as water or electrical damage, mould growth, and general deterioration, which could affect any project’s lifespan and compromise their safety.
There are many different types of waterproofing, however two most commonly used methods are waterproofing below or above screed. In this article, we’ll explore what screed waterproofing is and the pros, cons, and differences between each method to help you find the right approach for your waterproofing needs.
What is screed?
Screed is an important component of flooring installation, where this thin layer of material provides a smooth and even surface for the final floor finish (such as tiles or wood) to be applied over. Screed is available in several different types depending on the project, but most commonly is a mixture of sand and cement that is poured over a concrete floor or slabs before being levelled out for the final layer.
Whether you waterproof below or above the screed is dependent on several factors, such as the substrate structure, how present the construction joints are, and how compatible it is with other materials within the structure.
Waterproofing above screed
When you waterproof above the screed, you apply a waterproofing membrane over the screed layer before the final finish is implemented. Before applying the waterproofing membrane, the screed surface needs to be completely cleaned of any debris, as the waterproofing will dry and cure over this surface before the finish is placed.
Pros
- Can prevent efflorescence from forming on the surface
- Quick and easy to apply
- Can be easily maintained
Cons
- Can easily crack if the screed used is not strong enough
- May not be very durable if many people are walking or moving things around on it
- Risks water damage if any gaps or cracks in the membrane
Waterproofing below screed
Waterproofing under the screed involves the application of a waterproofing membrane onto the surface of the concrete before the screed is layered on top. The concrete needs to be cleaned of any debris or dust before the waterproofing is applied, as the screed layer and final layer will both go on top.
Pros
- Provides strong durability against general wear and foot traffic
- Optimum protection against water damage
- Increases safety by preventing water from seeping into the flooring
Cons
- Longer and more intensive installation process
- More difficult to repair damages as the layer is underneath the screed
- Can be expensive to deploy
Which waterproofing method is better for me?
Determining whether waterproofing below or above the screed is better depends on numerous factors, such as the type and purpose of your project, your budget, and the overall flooring system you have in mind.
If you want to implement waterproofing quickly and easily, then waterproofing above the screed might be the better option for you. This also allows you to conveniently access the waterproofing layer for future repairs.
Waterproofing below a screed might be an ideal choice if your project prioritises enhanced durability and protection, as this method is best for protecting against water damage.
Find waterproofing solutions for your needs with ARDEX
If you still need help deciding which waterproofing solution is best for you, speak to our expert team at ARDEX. We are happy to provide you with advice that best suits your needs. We specialise in waterproofing solutions including waterproof coating, liquid applied roof coating, epoxy waterproofing, liquid applied roofing systems, and carpark coating in Hong Kong to make all your construction projects easier and more efficient.
FAQs
What is the purpose and benefit of waterproofing?
Waterproofing has several benefits. In addition to protecting structures and important objects against water damage, it can also extend the longevity of a building or structure, reduce the need for maintenance and repairs caused by leaks or damage, and enhance the overall property value by being efficient, safe, and durable.
How do I decide whether to waterproof below or above screed?
Each project will have its own requirements and budget, which affects the decision between waterproofing below or above a screed. If you want to implement waterproofing in a shorter timeframe, then waterproofing above screed is better for you. However, if you want more durability, then waterproofing below screed should be considered.
How long does it take to install waterproofing?
The installation time for waterproofing varies depending on the size and complexity of the project, as well as the type of material used. It can take anywhere from a few days to a few weeks.
Waterproofing in Hong Kong: Protecting Your Property from Water Damage
Are you looking for effective waterproofing solutions in Hong Kong? Water damage can wreak havoc on your property, causing structural damage, mold growth, and other issues that can be expensive to repair. Fortunately, ARDEX Hong Kong offers a wide range of waterproofing products and services to help protect your property from water damage.
Why Waterproofing is Important in Hong Kong
Hong Kong’s humid climate and heavy rainfall make waterproofing essential to protect your property from water damage. Without proper waterproofing, water can penetrate through walls, roofs, and other surfaces, causing a host of problems such as:
- Structural damage
- Mold and mildew growth
- Health problems
- Reduced property value
ARDEX Waterproofing Solutions
ARDEX Hong Kong offers a range of waterproofing solutions to meet your needs, including:
- ARDEX WPM 300 – A waterproofing membrane that provides exceptional protection against water damage for your roof, walls, and other surfaces.
- ARDEX Sheltercoat – A waterproofing membrane that is easy to apply and provides long-lasting protection against water damage.
- ARDEX WPM 18 – A 2-part cement-based, liquid waterproofing membrane that provides a cost-effective solution for waterproofing a range of surfaces.
- ARDEX WPM 006 – A premium two-component cement-based waterproofing coating that provides excellent protection against water damage.
Why Choose ARDEX?
ARDEX is a trusted name in waterproofing, with over 70 years of experience in the industry. Our products are designed to provide long-lasting protection against water damage, and our team of experts can help you choose the right waterproofing solution for your property.
Contact Us Today
Don’t let water damage ruin your property. Contact ARDEX Hong Kong today to learn more about our waterproofing solutions and how we can help protect your property from water damage.
ARDEX HK 贊助 建造業議會舉辦「第一屆香港建造業技能大賽」
ARDEX香港參加並贊助於2021年5月6日咗由建造業議會舉辦「第一屆香港建造業技能大賽」, 並獲邀到香港建造業工藝測試中心接受贊助機構感謝狀頒贈儀式。
希望來年可繼續支持這項有意義的活動，繼續推動業界發掘人才，及促進建造業技術人才的發展，透過提升其技術水平成爲業界精英。
ARDEX HK sponsored The 1st Hong Kong Construction Skills Competition organized by the Construction Industry Council on May 6, 2021, and was invited to the Hong Kong Construction Industry Trade Testing Center to attend the ceremony and presented with a certificate of appreciation for ARDEX’s sponsorship.
ARDEX hopes that in the coming year, we can continue to support this meaningful event, continue to create an atmosphere for the industry to participate in the identification and development of construction workers as construction elites by elevating their skill level.
ARDEX has been awarded the logo of【Happy Company】｜ARDEX再次獲頒發「開心企業」標誌
We are pleased to announce that ARDEX Hong Kong has been awarded the logo of【Happy Company】by the CMA and the HKPHIF for 3 consecutive years.
We believe a caring and pleasant workspace is the best way to inspire innovation and cherish talents. As a caring employer, we will strive to create a joyful, harmonious and productive working environment.
ARDEX Hong Kong連續3年獲得由香港中華廠商聯合會和香港提升快樂指數基金頒發的「開心企業」標誌！我們明白為員工提供一個舒適愉快的工作間才能激發創意和留住人才。在未來的日子，我們定必繼續努力營造一個愉快、和諧與生產力兼備的工作環境！
ARDEX香港加入斷水流 共同提供可信賴及高質素的防水工程體驗
領先全港的防水物料供應商ARDEX香港 與全港首個一站式防水工程平台 – 斷水流 宣佈開展合作關係，利用各自的強項、技術與脈絡，共同為香港業主提供更值得信賴、價格公平及更高質素的防水工程體驗。
在該合作關係下，ARDEX香港將會為斷水流提供產品培訓、支援與考核予其工人，以確保工程合乎質量要求。另一邊廂，斷水流會在其防水工程中使用表現出眾的ARDEX防水系統，作為與其他防水業界公司的主要區別。
這種夥伴關係是兩家公司增長戰略的重要里程碑。ARDEX香港與斷水流的合作，將能滿足不斷增長的客戶需求，同時發展住宅防水的市場。
斷水流一站式防水工程平台: https://www.masterlau.com.hk
Click here for English version of the article
ARDEX Hong Kong joins Master Lau to provide trustworthy and high-quality home waterproofing services
ARDEX Hong Kong, the leading waterproofing supplier, and Master Lau, the first ever one-stop waterproofing platform in Hong Kong, are pleased to announce they have entered into a partnership that aims to offer high-quality and transparent-priced waterproofing experience to home owners through a tailored digital service that leverages their combined strengths, technologies and industry relationships.
Under the partnership, ARDEX Hong Kong will offer product trainings and knowledge assessments to Master Lau’s contractors to ensure their work quality is up to manufacturer’s standard. Master Lau, under the partnership, will specify outperforming ARDEX waterproofing systems in their projects as a key differentiation with other players.
This partnership is an important milestone for the growth strategy of both companies. Further collaboration will allow ARDEX Hong Kong and Master Lau to meet growing customer demand and serve residential waterproofing markets.
Master Lau One-stop Waterproofing Platform : https://www.masterlau.com.hk
中文版文本請按此
IMPORTANT COMPANY UPDATE
Ardex Hong Kong, as part of the Ardex Global Group has been servicing in Hong Kong for over 20 years. Ardex has over 50 locations globally and therefore are acutely aware of the far-reaching impact being felt by the spread of Covid-19. Through these concerning days, the health and well-being of our customers and our partners, as well as our employees and their families are foremost in our minds. We have plans in place to deal with the situation and to limit the virus entering our facilities. We will continue to monitor the situation and take guidance from the heath authorities.
All Ardex manufacturing sites in this region are in full operation. We have been in contact with our suppliers and we see no changes in supply. The Ardex offices are all functioning and sales team still active in the market as we believe that this is prudent to meet our customers’ needs and to carry on economic activity as advised by government. We will be moving to telephone and other electronic communication for all non-essential meetings and have advised staff of their social distancing responsibility. We still believe that meetings with customers including onsite support and technical advice will still be needed and therefore have not restricted these from taking place. Requirements to mitigate this threat can change daily, and we will endeavor to keep you updated in a timely manner should the situation change.
On behalf of the entire Ardex Hong Kong team, we wish each of you good health and look forward to being here to serve you in the days ahead.
ARDEX Hong Kong Attended the 2019 Happy Company Label Award Ceremony
On 11 April 2019, ARDEX HONG KONG was invited to attended the “2019 Happy Company Label Presentation Ceremony” by the Hong Kong Productivity Council and the Promoting Happiness Index Foundation for the first time. Professor Sophia Chan, the Secretary for Food and Health, officiated at the Label Presentation Ceremony.
In the future, we will strive to create a joyful, harmonious and productive working environment.
ARDEX Hong Kong has been awarded the “Happiness-at-work Label”
In January 2019, ARDEX Hong Kong has been awarded the “Happiness-at-work Label” by the Hong Kong Productivity Council in recognition of our commitment in offering a delightful working environment and promoting a positive, healthy lifestyle for employees. We will continue to create our happiness-at-work culture in the future.
Launched in 2013, the “Happiness-at-work Promotional Scheme” aims to encourage businesses and organizations to create a happy working atmosphere, and to raise the happiness-at-work level of the local workforce.
Happiness-at-work Promotional Scheme Website:
http://www.hkworkhappiness.com/